I don't want to get into it too much, but I basically liken festivals to Netflix in such that Netflix cheapens visual media by making it so readily accessible to everyone. There's less appreciation for the show or movie, making it less special, and for movies especially where you don't have that unique feel of going out and watching it theatres.
Just substitute DJ sets for shows/movies for festivals and it works the same way, where with a wide variety of sets available, each set feels less "special" and each DJ just feels like another spoke in the wheel. The appreciation for the DJ craft is lost as a result. Also gone is that specialness of going out to a night and seeing a DJ individually, and really savouring what they're doing. I'm sure many ppl don't like this aspect of going out and waiting in queues, but it's what kinda makes the night special, the anticipation.
I do like stacked lineups for sure but some festivals really overdue it and shorten set times. Ibiza has the right amount of stacked lineups in most of their events and I enjoy that.
Or maybe I'm just an old dinosaur that relishes Ibiza's past and the dominance it once had. Even though I didn't start going till 2015, I still remember reading up on Ibiza's scene when I discovered the music in the early 2000s and I guess maybe I still cling to that.
I'm sure ppl will disagree with this, but this is my $.02.