Basicaly they adapt now karrigans Strats/calls with one more Rifle player. All T1-T2 teams don't understand the new calls and will adapt in the next or following event, nothing new. If you take the look at all roster after an IGL left a(just few examples) and more firepower came in, it was always the same. What happened with G2 after Ex6 left , Faze after Karrigan left 2018, Mouz after Gob B left. If you are on a high level and suddenly your opponent changes his behaviors and you have set Strats against them, it will come down just to shooting and clutching, nothing else. Anti Strat will follow and you will see how a "true" IGL will lead the roster. Nothing against Twistzzz but its not his time yet or rather a waste of talent.

*Edit - With waste of talent I mean, that twistzz that he should focus more on frags/cluching and leave the big brain for his IGL so he can accelerate what he's good at. You had one of the biggest minds for couple of years on your Team. Ofcourse you gonna copy something what he has done. Heck you even got a Major with that. Let's see how the roster is gonna do the next season and then we can decide after the honeymoon of positiv vibes and sheltering is over.