Would it be possible to have an account setting that filters out Unearthed Arcana? I primarily DM and play Adventurers League so having these in my list isn't all that helpful and I'd rather just not see it, like I don't see homebrew content unless I look for it.

Not asking to make that the default, just if I could tick a box in my account settings and never see UA content again unless I go looking for it would be great.

I hope this will eventually be possible as they work on granular sharing; I realize you aren't talking about sharing specifically, but I'm thinking developing that might lay down infrastructure for what you want.  

I presume you are talking mostly about the Characters>Classes and Characters>Races section?  Or am I missing something?

Races, class archetypes, feats (not sure if there are any UA feats yet but there's a filter for it) etc. Basically anywhere UA might show up, I want to be able to say "I don't want to see this ever unless I look for it".

Granular sharing would would be nice, no need for me to share my entire adventure hardcovers when i just want to make sure players have the PHB and XGE etc.

I agree that some way to filter out UA would be very helpful.