Yeah, I also got the survey and filled it in and made plenty of references to the declining Academy coverage, and how watching the live Academy games are the sole reason why I think it's worth the subscription in the first place.
What really surprised me was I received an email from MUTV before I'd even finished the survey. Turned out, ironically, it was a response from my last complaint to them from almost a month ago! It felt a little less formulaic and copy and paste than usual, but mostly went over similar ground as to why they can't show "all" (!) the matches.
I guess the closest thing to admitting the true reasons was the following:
"Club media resources need to stretch across our men’s, women’s and Academy teams. Demand for content from all these teams is growing, whilst resources must be managed responsibly to manage costs. This results in hard choices about what to cover and we cannot always capture everything."