There are rumors that Zelensky does cocaine. He certainly acts like it. From Sergey Poletaev at rt.com:
The Ukrainian leader’s erratic behavior and growing messiah complex means he’s now an asset to Moscow

Ukrainian President Vladimir Zelensky © Antonio Masiello / Getty Images
The November issue of Time magazine features a cover with a small portrait of Vladimir Zelensky and the word “Nobody” above it. The word in larger type is part of the longer headline “Nobody Believes in Our Victory Like I Do” but, whatever the designers had in mind, it was unmistakable: Zelensky equals a nobody.
The similarly illustrated article was no less scandalous. It made everything clear: we Russians must keep Zelensky as the apple of our eye, because no one brings more chaos to the conduct of hostilities on the Ukrainian side and more discord to Kiev’s relations with the West than he does.
The article describes how Zelensky, who sees himself as the savior of humanity, loses touch with reality the further he goes: it was he who demanded that Bakhmut be held at all costs, burning reserves there which were intended for the summer counteroffensive. It is he who is still calling for an offensive in the south, once again destroying his people and valuable Western equipment in pointless attacks, and thus intensifying his conflict with the army’s leadership. It is he who is demanding an offensive on Gorlovka and, as long as he is president, no one in Ukraine dares to make a peep about negotiations with Russia, the necessity of which is becoming more and more obvious. And all this against a backdrop of gargantuan levels of theft.
More useless drivel from Straight Line Logic.