I'm fairly certain that a large portion of scams are designed to be obvious (due to things such as bad grammar or spelling mistakes). The idea being that only really gullible people would actually fall for it (so they won't have to waste their time with competent people).
Scams can be found basically anywhere and not even the review section of XP is safe. I found one review that is almost certainly a bot review and a scam. It just seems like a very typical phishing scam.
I also found out that I'm suddenly able to delete reviews (but reporting isn't an option). I've deleted the scam review, but I'll upload a censored screenshot of it later.