Its not about swallowing your feelings but rather how to communicate with your teammates. Their current predicament comes from swallowing their feelings and letting things build.
For example, nobody would say yelling at each other is a professional way to interact, but if it works for their CSGO team and the team is okay with it, then it's effective communication.
The Dota team never seemed to find that communication since TI2.
Hope Artstyle finds a good team. He went from a rusty huge Burden ingame that's there just because of his leadership when he rejoined Navi to arguably the best greedy support player on the scene
considering the interview they did with the managers they said that "training, streaming, being more social and shit" only Dendi and General agreed to do that (they probably want to rebuild the brand from the ground, bulldog does wonders for alliance overall), so not sure ArtStyle would be part of it