Arsenal and Arteta still have weakness but in last two seasons, especially the last season, they came very nearly to a final win against Manchester City. They failed eventually in a very tight race but I believe they don't give up and are preparing for a better ending this season.
The direct competition between Arteta and Guardiola is very interesting as Arteta learned a lot of things from Guardiola as an assistant coach in Manchester City years ago.
Once they were moving together towards one goal and Arteta remembers those times, now they are moving towards one goal but with different teams. The same can be said about Maresca and Kompany (only in a different championship) I am sure that only an ambitious and intelligent person can get into Guardiola's team, and it is logical that over time these people will want to try their hand at being a head coach.
And as we see, people who worked with Guardiola achieve success to varying degrees, this means that he is a great coach and there is something to learn from him. By the way, now they have started discussing the possible appointment of Guardiola as coach of the England national team upon the expiration of his contract with City in the summer of 2025.