It is a non-issue if:
A- I've already capped my fighter.
B- My fighter has already passed 800k xp
C- My fighter has less than 800k xp
D - I don't want an Arti.
E- I don't want completionist
This only affects me if I wanted an Arti all along, or if I just wanted a L20 of ANY class. But since Arti wasn't available when I created my fighter, it's still a non-issue.
The more I see arguments against this, the more it sound like it's just sour grapes.