ruined over the course of 3 years by a shit release schedule.

In what way is it being ruined right now?

because of how much they fucked up its ending by calling it Final Season

Agreed, that was a big fuck up, but I don't see how it actually ruined the ending, aside from being disappointed it didn't actually end yet, which iirc, they announced while it was airing.

continuing to push "Final" more and more over 3 years.

I mean, they can't very well call it something else afterwards.