One of the great attractions of speculation is that it is untethered by the rules of evidence. What could Putin have on Trump? I agree that it is not a salacious videotape. My guess is that Trump is deeply in debt to Putin's oligarchs and is threatened with financial ruin if he gets out of line. I have long wondered whether Trump has much less money than he claims and much less even than he appears to have, judging from his life style. It is genuinely odd.
Look, these are hard times, politically. You have to take pleasure where you can find it, and if Trump is now crashing and burning, well, enjoy it, even though it leaves the underlying rot in American life and economy unaltered.
Nobody has commented on my evolutionary biological reverie. I had hoped someone who actually knows something about the subject would respond, and either correct me or expand on what I had said.