I wouldn't be so surprised tbh. There are a lot of young valorant pros who couldn't make it due to start of Franchising, some of them could get on a team in cs.
Yes. Csgo isn't a like a new game. It's like a big game engine update. Still going to be the same players at top and no valorant t3 player is going to be t1 in Csgo in a million years.
the thing is almost all valorant pros are ex cs players,even the ones who werent pro or were pro in another game,they couldnt make it back then so why would they now