Nope. In fact they accept utter garbage most of the time. I can't count the numbers of times I've caught pure errors (literal logic errors, code errors, mathematical errors) even in highly respected journals. Journals have a high bar of entry because they've gated their communities, only allowing insiders to publish (ie tenured professors, people associated/employed with university labs or their colleagues). If you don't have an industry connection the odds of you self publishing in these journals is zero. And if you _do_ find a connection, say a professor whose willing to help you out, they'll demand to place their name on your paper (without actually contributing anything). This is how you get papers with 50 authors, because every politicker wanted a piece of the pie.
This is also why you see frontier AI labs self-publishing on their websites rather than in journals.