Last season, there were indeed those who felt disappointed and happy about the title won by Manchester City and Arsenal's failure to win the Premier League. But basically they all fought according to their abilities, including Inter Milan's efforts in the Champions League even though in the end Inter Milan did not get the title there. I also agree with what you said where the surprise is not only in the Champions League, but in other leagues it can also happen next season.
I doubt if Manchester City would do another treble trophy season by next season. Next season will not be the same as last season. Every team had to prepare, work and sign in new players into their team so that they won't fall out of the title race as they did before.
Every club and league can expect a competitive season next year. A certain club dominating them repeatedly is something that no club wants to experience. By next season, there will be a change in the titleholders, and Manchester City won't be declared the champion of the 2023–2024 premier league season.