I agree with most of it. I just think that the acquisitions of Varane and Casemiro are indicators of what has been going wrong. Both players were great and when they joined, they were on big money and in the case of Casemiro on a pretty long contract as well. This is something, that probably wouldn't even had happened under SAF.
Overall of course: we are far from oblivion but this limited success came for huge outlays. Spending crazy amounts in wages for players or fees. Our behaviour therefor might be a reason that Brunos now is trying to force an extention with wage increase as well. Why wouldn't they - over the last years, we made such mistakes on a regular basis. Over the years, players were able to have it quite comfortable here, everything is true in your post but we shouldn't ignore that.