Scientists invented a fake dis...
I wouldn't worry too much - the water was already well muddied.
I pointed out elsewhere, libraries are/were divided in two: "fiction" and "non-fiction". For a very good reason - this part is fun, and this part is supposed to be the bits you can trust.
But the internet - not so much. And by ingesting the internet as a corpus, you've already spent billions of dollars contaminating your corpus with not just bullshit, but realistic sounding bullshit like discredited studies.
LLMs can be useful for many things. Truth isn't one of them, by nature and training. If your use-case doesn't care about or can compensate against the bullshit, maybe that doesn't matter.
I'd honestly be interested in a LLM trained against a purely non-fiction corpus. Something well-vetted. I wonder if it would be any better. Probably not.