So I got the Marksmanship artifact quest and I didn't feel like changing spec (Playing BM) just for the questline and when the game promted that I needed to change spec I just exited out of it and could continue, it seems to work however I might have noticed a thing blizz might have put in just in case someone did the Artifact Quests as a different spec than intended. The mobs in the scenario that to get the bow was hitting like trucks (100-300k per hit). Which made that part quite the challange, however not impossible so I actully managed to get past it without ever changing to marksman.
So I was wondering if this is true for all artifact questlines that it makes the whole thing alot harder if you are using another spec than intended?