Anecdotally, I got some scam crypto ad called "Bitcoin Era" in my GMail app just last weekend. The whole thing is laughably scammy. I Googled the name out of curiosity, and surprise! Almost every single result in the first three pages is a fake review encouraging people to "invest" in this BS. Only 1 or 2 results are actual reviewers who fight such scams and point out how stupid the whole scheme is, with comments from actual people who unfortunately got scammed. The whole experience seems to corroborate the points made in the article quite well.
