In my opinion the only reason why he would post about those things is because he really does believe it. He is obviously misguided but one of the things about those that start believing conspiracy theories is that they are unaware they have been influenced.
Vitalik Buterin is born in russia and a friend of Putin.
With the sactions inplace it's only possible to apply sanctions after ethereum 2.0 is inplace. After 2.0 ethereum will jist be another Tether.. A currency that can tracked and deleted by Trump or Putin..
Just lol.