I believe the New York Times would threaten to sue you — if they noticed you and cared enough (which I assume they would if you were operating a large enough site).
But also, when you post content to Reddit, you've granted them a (non-exclusive) license to reproduce it as they please. If Reddit's okay with Buzzfeed's reprinting, then I don't think it would legally been seen as stealing either.
In any case, your objection seems to be that plagiarism and repurposing of content (legal or not) fulfills the same evil end: profit from the labor of others. Sure, I'm not necessarily arguing against that. But I'm pointing out there's an additional element to plagiarism, which is the implication of independent, original reporting. To use a screenshot from the investigative article, which shows the Reuters and the Snopes version of a Supreme Court ruling:
https://img.buzzfeed.com/buzzfeed-static/static/2021-08/13/0...
By restating Reuters' assertions without attribution, Snopes implicitly implies that it has done the independent reporting and research (e.g. calling up the attorneys, downloading and reading the court docket). And the apparent "fact" that this Kentucky court clerk is denying licenses based on her religious beliefs becomes significantly more established "fact" when two different journalism outlets have independently confirmed it.
Snopes ostensible speciality is gathering and summarizing established facts, which includes filtering through the noise of fakery and also, redundant information. Committing plagiarism is not just immoral, but a direct attack on Snopes' reason for existence, and that what makes this situation especially notable beyond "Doesn't everyone do growth hacks?"