This is a valid point, but also a different point. Several teams with less than us have consistently outperformed us. Several teams who would gladly take most of our players tend to play better every week. If we drew a decent Championship side in the Cup, we would probably win but very unlikely completely outplay them.
Personally, I wasn’t in favour of sacking Ten Hag. The two reasons I was against it at the time was that I couldn’t be bothered with the exhaustion of starting a whole new ‘have to give him time’, ‘once he gets his players in’ , ‘if he makes the CL then he stays’ cycle to begin again - and secondly, I saw no outstanding candidate on the market, and that included Amorim. I always had a lot of respect for Amorim, but was firmly against the system that he insists on playing.
In my view, there was a chance that we were already going through the pain with Ten Hag, and were probably closer to the end of the caterpillar stage before we saw the butterfly (or ladybird or whatever the correct analogy is here). Now, we go back to cocoon. I think we played far better THIS season under Ten Hag, without the results of course, than we ever have under Amorim. There performances against Palace and West Ham away standout most, games where we are registering multiple shots on goal and creating quality chances and should have won by a few. I do not see that happening under Amorim. But most importantly, the group had experienced a lot together already which in theory could benefit them in the future, but we start again, and we start again just for the sake of it, not for an outstanding candidate/fit.
As soon as we went down the road of getting a 343 manager in, it’s of course not impossible we succeed, but we deliberately put ourselves in a position where it is incredibly hard and less likely to do so. The roles require a specific and uncommon profile of player, the best of whom are rarely available. If we got the optimal XI, then great. But we have taken a choice to exclude a large percentage of players on the market simply due to profile.