I didn't notice anything like that.
I agree. But I don't think the AA in DS3 is "poor" within the confines of what is possible with post-processing. It's just tweaked more towards retaining detail. Of course, if you prefer a softer picture you could prefer what you get from externally injected post-AA.
I guess. All I can say is that I find the IQ to be kind of shitty in the game. At this point I would welcome a solution that comes with a little bluriness, actually. Though I know not everybody is ok with that tradeoff.