At this point the sane people are staying quiet. The madness is in full swing, a large number of fools are desperate to be parted from their money, and there is no point trying to stop them.
Even on Hacker News, there are no comments below saying "this is stupid". Just "how can I throw my money into this pit?" "I'm planning to build an AI algorithm to throw my money into this pit, can anyone advise?" and "if I throw my money in this pit, will it double or triple over the next week?" Good luck, guys.