For me it doesn't, personally I find it easier to find the finger position with a gloved hand on a curved trigger in the heat of the moment while in the field.
I have nothing against straight triggers, I think they are great, but I have been shooting curved triggers so long I don't care to relearn the feel. I target shoot for fun with my hunting rifles all through the warm seasons with no gloves. Come hunting season, for me, a glove makes a difference.
Edit: I got caught up in the thread title and not the body of the post, so my apologies if I derailed it. I have shot flat triggers on others AR's, its weird. To the OP, try it you may love it.