The language is in Russian but you can use translate feature of the browser. I've just seen it from another Dota 2 page that said it's going to happen but no official statement yet from him and Team Secret.
Whether their players are allowed to compete in certain tournaments that I wouldn't know.
But with Cloud9's takeover of Gambit eSports (known as Players during recent events) has explained alot of what is transpiring for eSports in that region.
https://www.sportsbusinessjournal.com/Esports/Sections/Franchises/2022/04/Cloud9-acquires-Gambit-Esports-Counter-Strike-Global-Offensive-team
Team name's have been changed and there are active transfers due to the conflict. I guess we're going to see more of it and then new teams will be formed.
Or is this a total disband and the teams are dissolved for good?
This conflict has caused athletes in other sports not to be able to compete due to their nationality. Not completely fair to them but the organizing bodies did try with having them compete under an anonymous banner.