No. You are saying that the ignoring of some certain people is a willful act, and I'm saying that the choosing of people other than those is the willful part of the deal (most of the time). That's a big difference. I'm not choosing to ignore A, B and C, I'm choosing to pay attention to D, E and F.
Now there are people who have traits/habits/mannerisms you don't like, appreciate, or want around you as part of your life. You do shine them on, but's that's specific, not general.
I generally find also that the 'loud' (whatever you mean by that, I think we all have a different sense of it) though not the easiest to ignore, are often the first ones to get that specific rejection because a lot of people really don't like that exact behavior as its seen as rude, boorish, and a sign of ill breeding.
And the difference between RL and the net is not a matter of liking people according to traits, but a difference in what those traits are. Physical attractiveness counts for more in RL than it does on line, while writing style counts more on line than it tends to in RL.
I think I know a perfect case study for this, and I've seen it time after time. You have some guys and two women. One woman is kinda plain, overweight and the other is a stone-cold fox LA model type. Both girls pull out a cigarette at the same time and all (ALL) the guys whip out their lighters in a race to be first to light the cute girls cigarette while the plain girl is standing there with no one offering to light hers. The guys are not choosing to ignore the plain girl, they are choosing to try to impress the babe, had the babe not been there, plain girl would have got her ciggy lit right off. As it is, everyone will notice it, and several of the guys will offer to light hers too, but it's strictly second-place. We didn't want to make her feel bad, we just wanted to help the other one first.