I'm a bit confused as to what the point you're trying to convey is. From what I understand, the main message you're trying to convey is that science has poor job prospects if you're expecting a job in science, and that biomed is risky as it is difficult to gain entry medicine? Honestly, despite being a BSc student myself, I think these points are valid and generally correct (apart from the overtly hyperbolic, clickbaity title); its nice to see the citing of sources and I can tell you've put quite a lot of thought into what you have to say. But I'm not sure that it's worth the weight you've placed on it either.
I'm also not so sure that I agree with the inferences that you're making with the statistics provided, and with what I think your contention is. Correct me if I'm wrong, but I'm assuming you're suggesting that people should steer away from science because:
it's evident that a bachelor of science is awful for jobs. Not just awful but the lowest across the board, much lower than Arts.
I don't think this is a logical conclusion to draw from the fact that:
The vast majority of science graduates have found work unrelated to any science fields they studied. Moreover the vast majority of science grads go back to commence further study in the hopes of landing a job.
I had a look through the links you supplied, and couldn't find anything to confirm that 'the vast majority of science grads go back to commence further study", so I'm unsure as to whether this is speculation or fact (let me know if I missed anything). The way in which the science graduates end up landing jobs in a diverse range of fields could also simply be interpreted as a testament to not the knowledge science graduates are left with, but to their problem solving and critical thinking skills developed over the course of their degree, which allows them to pursue jobs in a variety of areas, not being limited to simply the area they chose to undertake study. Also, I think its worth noting a few of those articles are from 2013, which was 5 years ago, it would be interesting to see a more recent take.
but research has been dead in Australia for a while.
I don't know if you have any evidence to support this, but from my observations over the last few years I'm not sure this is true. From what I've seen, there is quite a lot of medical research in Australia and iirc, the Australian Government recently announced the formation of a national space program; I'd suggest there would be a fair bit of R&D involved in such an undertaking. Personally, I haven't done any research on the numbers surrounding this, but I do think it's unfair for you to call an industry 'dead' without any evidence.
However, I think perhaps what I disagree with most in your post is the fact that students should be selecting degrees based on job prospects. Picking a degree based on job prospects is, in my view, one of the worst ways possible to select a degree. I could write an entire essay on this, but I'll try to keep it short. Picking a degree you are not 100% invested into because it has great job prospects will probably lead to a difficult university experience due to not being engaged with what's being taught, which could result in you putting less effort into studying, networking and really making the most of your degree. Going up against people who love the degree they're studying and are 100% invested makes the difference even more stark. It'll be easier for them to put in the effort, natural for them to attempt to network, and eager to impress employers for a job they're really keen to do.
Besides, so many jobs that exist now might not exist in four years, and there will be so many jobs in four years existing that don't exist today. Instead, I personally think the decision should be based on interests and general career aspirations, not one based on what one will make getting a job 'easier' as a result of higher demand.
I'm sure this information may suprise many of you as it's swept under the rug unless students go out of their way to research it for themselves. But going by information from grad stats as well as numerous other statistics...
I think I'm rambling now so I'll just end with this. I do understand your interpretation that most science students don't directly end up in science, but don't think it's fair to assume this information would surprise most students, and I know that it's not fair paint the image statistics supply as black or white. I know that for me at least, I'm pursuing science because I love it, and do see potential jobs in it down the line. I'd love to hear from other students too, but high demand of a degree isn't a primary motivator for everyone. Furthermore, statistics provide us with information to help us reach conclusions; they're tools for us to use and interpret meaning from. Hence, I'd be hesitant to suggest that these stats 'show' or 'prove' any contention without interpretation of what they are really showing. They certainly bear meaning, but they are merely one of countless factors that must be considered by a student considering which degree to undertake.
Note: Sorry for the mini-essay, I'm just really passionate about this topic, and really wanted to get another viewpoint out there.