You’re kind of discounting the concept of credibility. People make all sorts of wild claims—far too many to actually test them—so it’s necessary to weed out claims that aren’t credible by looking at things like how well the claims are presented. A new theory in physics will be ignored if it’s written in crayon in scraps of trash, as it should be.
Obviously the recent claims about superconductivity are a lot more credible than that, and a bunch of researchers around the world have decided their claims are worth testing, but there’s nothing wrong with tempering your optimism in response to a paper that seems a bit dodgy. It’s not unreasonable to suspect that researchers who can’t get their shit together enough to release a paper without drama might also have trouble getting their shit together enough to conduct research without making critical mistakes.