Decided to do some research about Andrey and all I could find are some random sites on Google which are difficult to trust. Also, the youtube and instagram links that you shared seem legit, but I cannot understand anything since everything is in Russian.
Ye, he owns several websites including casino blog (
https://ttrblog.ru) and cryptonews site (
https://ttrcoin.com) and is known mostly in russian community cos he is Russian native-speaker.