I think Chelsea already know this about Pochettino but why he still hasn't been fired maybe because he is still under a long contract if he is fired then Chelsea must pay compensation to Pochettino and finding a new coach is not easy it takes accuracy in order to change Chelsea's current situation.
Maybe Pochettino will be retained until the end of the season because even if by changing the new coach it will not change Chelsea's situation because their position is too far away to get tickets to European competition and after this season ends maybe Chelsea will do a lot of reshuffling then this is not a little money that Chelsea must provide.
Last season Todd Boehly was too hasty in making the decision to fire the coach. which resulted in 3 coach changes last season. But this season it seems Todd Boehly has become more patient. As if he still trusts Pochettino. But from several reports circulating since last year, Pocchetino is actually in a position where he could be fired at any time even though his contract is long. But the club seems to want to give him the opportunity until the end of the season. because changing the coach now is not only financially good and will also not be good for the balance of the squad that has been built. Because changing coaches will always make the players adapt again to a new coaching style and yes, this could make Chelsea worse if they choose the wrong coach. So I personally quite agree that Pocchettino should be kept at least until the end of the season.