Do you not think the way we're set up makes these mistakes more likely? When Casemiro is basically playing as the lone midfielder while the other two bomb forward as attackers in possession, are mistakes not likely to happen? Considering Casemiro's strengths and weaknesses, that's a recipe for disaster and everyone can see it except for ETH apparently. Mainoo dropped into his position after he came off and the same thing happened again. Also, when something like this is happening so consistently, it's absolutely the managers intention for this to be the way we are set up. He's basically set up the team treating Casemiro as De Jong, who is press resistant and capable of bringing the ball out defence at a much higher level. The system is absolutely the cause of the habitual errors we keep seeing. It wouldn't be as much of a problem if we actually scored goals, but at the moment it's very much high risk with no reward.
Sure, the errors don't happen every game but that's because most teams don't press as hard or effectively as Liverpool, which really highlighted Casemiro's deficiencies. But on that note, shouldn't a manager play to his players strengths or at least not make him the focal point of the whole system when he clearly isn't the kind of player it requires.