>>40793303A comparable I can see with what they're attempting is what MtG does, where playable cards switch out every year or two.
The problem with competitive pokemon is they keep attempting to balance it by adding new shit, when the best solution is to start cutting. I'll admit this was an extremely harsh way to do it, but now that everything is gone people can start looking for creative ways to fill holes instead of checking the new mons to see if they are better enough to replace what's already there.