I don't know why this has to be said, but there is a significant difference between a nation-state buying a football club purely for sportswashing purposes compared to some random ass billionaire twat who buys the club to pump their own ego or make money.
You could say Abramovich is a bit of a tweener considering his fortune was directly related to funneling money away from the Russian people with the help of his government connections, but it's still not comparable to Qatar/UAE/SA.
Lol Abramovich is borderline a mafia kingpin if you do even a little bit of research in to his life's 'work'. He is a real life movie villain with influence that extends in all the worst places, and most of his money comes from destroying the planet we live in. Threats, intimidation, money laundering and corruption are second nature to him.