For starters, I’d look to see if there’s been an increase in the number or errors made in calls that are not reviewable.
I recall a book being hawked, quite a few years ago, maybe on over the air Howard Stern, maybe Glenn Beck? The author was discussing cheating in sports and he said it was so prevalent that he no longer watched any sports except for pure entertainment in the moment, that he had lost all confidence in “rooting for a home team” in an “honest” competition anymore. I don’t recall the author or the book title. could have been 25 yrs ago.