Again, you're not inherently wrong, but I think we're also treading into the 2022 world of selective outrage.
If we were in West Ham's position, I doubt even 5% of the fan base would say they were "disillusioned" with Prem football. The Olympic Stadium was nothing more than a punch-up-pit not fit for football 3 years ago, now its 60,000 fans behind the team.
Football fans are fickle. Doesn't mean they wrong of course. I just don't buy into the "outrage" aspect. I accept it for what it is: a select few teams that the Prem brand depends on, then the "misc 14" below them.
Like I said: entertainment tv. Had City not have become the richest team overnight and signed a dozen players for 30m one after the other live on Sky, or media-luvvy 'Arry Redknapp not fixed Spurs all those years ago; who'd care about them.
I don't follow lower league football myself, but I believe quite a lot of people enjoy it. Cheaper tickets, fun atmosphere, few beers etc. Exiting the Prem might possibly be financial armaggedon for the club, but it wont be the end of the world.