I admit that I am a Chelsea fan, but I see that Boehly is an owner who is difficult to trust, it is clear from what he did to Potter and Pochettino, he really is not a patient owner. This is the first time I heard about Maresca and even though she had a bad experience as you said, Chelsea have good players, I'm sure Maresca will be able to work well with the Chelsea squad and management, especially since the issue is that Maresca is a former pupil of Pep Guardiola, so Let's just give Maresca the opportunity to work with Chelsea.
Boehly doesn't have the patience to see his club change for the better and be more competitive with the same coach in several seasons, that's why he changes coaches every time the results are unsatisfactory.
However, it seems he is more confident that Enzo Maresca will be able to bring Chelsea a better team next season, because Enzo got a long five year contract while Pochettino only got a 3 year contract, or seeing Chelsea's development in recent times has made Boehly even more convinced that with a better coach, the club will also be better.
a team that is not patient enough to wait for a satisfactory performance is actually something that is not good either. Because after all, the coach will need time to show all his abilities, and the problem is that Chelsea always wants to see fairly instant results that can make them look good. In my opinion, this is something that is not good for a team, because they will always change coaches when they are not satisfied with the results.
Now there is also no guarantee that when they change coaches they will be even better, because this takes time and it is possible that Chelsea could be worse in the hands of their new coach. Management should give proper opportunities to coaches, especially if the coach shows something good or he can progress well. However, Chelsea did not give that opportunity to a coach who produced results that they thought were unsatisfactory.