I used to enjoy the changing meta, new heroes, balance patches back when I played dota a lot.

Now that I haven't played in years I don't enjoy watching any more because it's too far removed from the game it was when I played. I can't tune in to an important final and follow along at anything other than the most superficial of levels.

If the meta was static then id be a casual follower, as it is I'm not any sort of follower.

Professional sports seem to have very large casual fan bases. If you kept changing the rules then maybe they'd be fine with that, or maybe they'd be like me and stop watching.