I think we're getting crossed wires on the word 'considerably' which is my fault as i brought it up, but my argument is, regardless of the Chelsea game, there hasn't been enough changing of the players, as i thought i evidenced in the list of defeats, and this has been a feature at the club in the last decade that we simply don't get rid of players until far too late. The manager thing is another issue-if EtH goes there can be no complaints but i do get frustrated when people make out that it's almost a completely new squad when often 50% of the outfield players have been here since Ole's first season or longer (I'm NOT referencing the Chelsea game which is different but the wider season as a whole)
You're correctly saying half a team is now EtH's but that still leaves a core of players that have been here for a long period that have repeatedly failed time after time in a cycle of one good season (or two) followed by a catastrophic collapse, often with early champions league exits and humiliating defeats. The majority of those defeats have featured at least 5 starters from previous managers and even more that come off the bench. My argument is that, as well as the manager, a massive problem remains at the club in shifting deadwood and assessing quality.
Regardless of the result against Chelsea, in the wider perspective of the season, when Rashford is your star player, Shaw is your first choice left back and can't stay fit, Martial is your only reserve striker, Mctominay is somehow playing games for a team that wants to play in the champions league and challenge for the league title, when the likes of AwB and Maguire are still important members of the squad, and Bruno is the living embodiment of chaos on a football pitch then why are we surprised at this point? I'm not saying any of those guys are toxic or bad players, most are just not consistently good or reliable enough and it's been demonstrated quite often.
If EtH is sacked there can be no complaints. But i can't face another season of some of these guys getting another chance for a new manager, probably doing well for six months or so and finishing third or second place and then mysteriously falling to a seventh place finish a season or so later.