[....]
Each Premier League season, the league keeps getting better.
I would argue that the recently concluded 2022-2023 season wasn't any better than the previous or the seasons before that. The only thing that probably kept everyone really interested is Arsenal's title charge and City's late league takeover. There was no real rivalry unlike when the so-called big four dominated the league for years.
[....]then they should hire just the players Pochettino needs any other player Pochettino doesn't need should not be hired doesn't matter how expensive and famous they are.
It's not like quality players are lining up on Chelsea's doorstep hoping for a contract. The market is competitive enough that every top clubs fight over them. Face the fact that Pochettino will not get all his preferred players and that Chelsea will be forced to sign an alternative.