Thank you so much for this post and its high educational quality.
Explanations like these will be of unbelievable value in the coming months and years, when POW/BTC will be attacked. (It has already begun)
Rather, I thank you, Gachapin. The effort is worthwhile if somebody cares! I hope that whatever I have written can help you advocate for Bitcoin, warn other Bitcoiners about the threat, and protect people who may consider POS altcoins from being lured by the pernicious, plausibly-seeming, subtly manipulative false promises of POS.