Honestly as someone who is also in research, that is pretty understandable. Preprint papers are all subject to peer review and editing after the fact, but are a good opportunity to stake your claim on a big discovery before someone else can. Preprints are inherently not final versions and I guarantee that the mistakes will be caught before publication.

Okay so I agree that it needs to be peer reviewed and independently verified before we can trust it. But how exactly does the preprint look rushed?

Very true that it needs to be confirmed, but worth mentioning that every paper in history was at one point or another unreviewed and uncooborated. The fact that this isn’t yet doesn’t inherently mean anything bad for the quality of the results.

I’m just a biologist so I can’t weigh in to the credibility of the paper beyond that

Meaningless as long as they continue to use the site/app and give him ad revenue.

not a fucking chance