I think it can be taken for granted that people on this site have an elevated sense of skepticism

They also have an elevated sense of contrarianism. I suspect it's not enough to make them literally send money to a scammer, but enough to argue publicly about giving the benefit of doubt.

My long comment was written for the audience. To make people potentially swayed by clever arguments remember the context -- that this is a website where we publicly talk about donating to MIRI, publicly talk about money in general, already have a lot of quality financial advice, and no one is preventing our mysterious benefactor from posting an article.