Do you really think that Chet would have done that type of practice with Demon1? Hell no the team was destroyed and disliked one another. He had no way to improve since he was forced intro the role immediately.
Itopata is great at telling his team what to do during timeouts, that is what the previous coach was terrible at and the team did not need him to help improve the players around him because that is something Aspas was doing excels at. Now they do not have Aspas and Itopata has to do that himself and look at the results.
Demon1 did not have the system needed to learn other Agents, Rossy could not learn how to be a great leader, K1ng couldn't learn to slot into the Duelist role and Tex fell of as much as it hurts to admit.
If Lev wanted to succeed they should have looked for an Assistant Coach that would be there to help improve and keep them performing well. Yet they didn't.
At the End of the day its a series of shitty circumstances and trying to make Demon1 fill Aspas's role which he never will, he isn't Aspas. To go back to my original statement which is very much true. With an actual Leader, whether that is a player or a coach just someone who can help Demon1 learn these roles and get him to Improve he can be one of the best controllers in the Americas just as he was during Champs when he filled.