Are there things that Disney doesn't do right? Sure. But they are constantly adding and removing things. Of course there are things one could say are objectively worse, but there are others that you could say are objectively better. And quantifying those things are more subjective than objective.Or it's easy to use rational logic and objectively look at what was offered at one point versus what is offered now.
Not that there's anything wrong with thinking it's better now than ever; that's great if that's been your experience! A lot of it is subjective, of course, and I'm certainly not saying every single thing is worse now than it used to be. It's not of course not 100% worse across the board. But there are things that are objectively worse now than they were 20+ years ago. Some of them are Disney's fault/choice and some of them aren't -- e.g. I suppose Disney could artificially lower crowd levels with a capacity cap if they wanted, but that's not realistic.
There are plenty of people, including on this forum, who look at the present through rose colored glasses ("everything I am experiencing at this moment is always the best thing that's ever happened") the same way some people look at the past through them.