Yeah I know some points are gone and replaced with feats of strength but that still leaves a ton of achievement points that you could have gotten more than TEN YEARS AGO and they are still counting and are being shown off in guild lists and trade chats; that even creeps into the most casual parts of the game; it turns even the simplest most casual activity from Vanilla like collecting a silly pet that does nothing into something "hard-core" you can show off for vanity on a trade chat (and vanity is the norm in people so that will affect most of them).
What if you reset ALL achievement points every single expansion (just as you reset fighting power level) and leave them all as feats of strength; that will still leave people with vanity showing off their FoS but it will alleviate the problem enormously since it would be fair calling those inferior if they have no points (and they objectively are (e.g. Gladiator in 2014 is way less important than Gladiator in 2021 if you're about to play now)); I initially had that thought for a sort-of "WoW reboot" but it helps even in this way.