The problem i see with the feast is literally nothing else in the game is set up in this limited, time-gated way.
It's actually much the opposite.Dungeon minions get added to treasure maps when the dungeon becomes irrelevant
Raid mounts and gear become easier to get as you outgear it
big achievement rewards just build up over time if you do the associated content
primal rewards get made easier and easier as time passes and eventually just start coming back from retainer ventures
even the actually successful pvp mode rewards are now easier to get with the rotation system reviving older maps and their associated rewards

so why is it a nearly dead and bloated with system abusers piece of the game gifted with more and more exclusive stuff?

It's pretty confusing if you really think about it imo

would there be outcry if instead of becoming easier over time the primal mounts were locked out once the next primal is released?
what if the raid mounts stopped dropping when the next tier is released?

will never know because the feast is the only part of the game where this idiocy happens and it seems to be set up like bribery to get people doing it at all...