I think it's become such a big thing due to the fact the more fans can see why outside and backstage influences can cause the onscreen matches and stories to be affected. Once promotions got lazier at explaining or wrapping up loose ends of stories then me personally wanted to know what happened?
Then once you delve into the rabbithole and you see more interesting tales and rumors being spun about the backstage stuff than anything going on in the product then it makes it harder to commit your time and emotional investment in the onscreen stories.
When you see how due to this reason or another then it's not gonna ever get paid off or end in a satisfactory way and talent you cheer for and support languish aimlessly for reasons on screen you don't understand but read some news backstage and in situations like Enzo recently you see why shit just stopped and disappeared.
With so much entertainment at our fingertips and so much product to sift through I would much rather have an idea of what the possible direction of the product is gonna be vs just blinding sifting through the near 8-10 hours of weekly shows for WWE alone.
I see it kinda like going to the movies, if it's a franchise or a director that hasn't let me down then I'm gonna watch regardless but if it's something that has a history of bad content or poor stories then I'm gonna check out some reviews and critics opinions before I invest my time.
Pro wrestling fans online are notorious complainers but sometimes it's valid, because most of the time at least with WWE they seem to mock fans when they take the product seriously and also they dump on fans for not giving a shit about what's going on. You can't have it both ways.