you've named one achievement which, if you play the game, you probably would've gotten by now simply by doing the daily quests for the zone. achievements like that can either be grinded out quickly or you can do them over time and get it naturally. you've said that BfA has gone overboard in these grindy achievements but you haven't given any sort of examples, other than that one achievement, to back up your claim. if a single achievement is all that is needed to make it go overboard then ok, I will play
BC - Bloody Rare
Wrath - Frostbitten
Cata zones - Loremaster of Kalimdor & Loremaster of EK - these took ages, fucking ages to do. Way more simpler now that it's account wide and storyline based instead of number based
MoP - Going to Need a Bigger Bag
WoD - Warlord of Draenor
Legion - And We're All Out of Mana Buns