I respect your thinking but I don't want to be unfair to Erik ten Hag honestly. Let's take the last season as an example. Manchester United faced a huge injury problem. So many important players were absent for a long time which affected their performance directly. I don't think this is a bad excuse. Every team would have serious difficulties in such condition.

Their defense was affected the most by this. They conceded too many goals. Even when Varane returned from injury he couldn't perform decently. We didn't even see Lisandro Martinez being able to play properly either.
What is poor will remain poor, there is no need to give excuses for failure. There are other teams that had players in injury and they still perform better. In the beginning of the season when most of the important players were active, it's not like Erik was killing it so I don't think the room of excuse i necessary. Let's even use Manchester City as example, Kevin had injury and their midfield becomes incompleted as Haaland wasn't doing well but his personal performance never stop them from winning, they improvise.
I just think the club will do what they want even though people drop their opinion but if they continue this way, the team are very far from reaching the Champions League, not even next season but if they buy and sell some players, there might be some changes. I will like to see that guy called Onana dispose immediately, that's there number one red flag they are not taking into consideration.