I think this is the correct answer, but another big turning point for me was the move to Seagrave. If you recall we moved to Seagrave just before Covid. That season we were brilliant up until that time, when we played and lost to Man City and Liverpool in quick succession and then post Covid break, choked our chance of getting to the Champions League. For me since we moved there, the culture of the club has completely changed and the club went from "plucky underdogs" to "arrogant willy pullers that think they are way better than they actually are."
Now we did win the cup that year, so it's not like it happened overnight, but slowly but surely, that place changed the culture of the club and its killed us. But fundamentally the culture changed when Vichai passed, there are no two ways about it.