Hmmm, You make some fine arguments i admit, I you say them in a coherent manner.
But I think that 1 example you described is literally the only one i can think of in the last ~4 years of foruming i've done. So its a very rare occasion. However i can also bet most of those people who said they were going to do something didn't.
While i agree this entire thing is pointless, I'm not against that idea, I'm just saying its not going to make the world stop. FFXIAH has been doing this for quite some time as is. The people who don't try to hide their name aren't always after "Fame", They simply take responsibility for their actions, good or bad.
Just because a person does not try to hide who they are doesn't mean they're after glory or are cocky or whatever. They simply do not fear their own actions. I personally trust what i say enough to not care rather people know or recognize me in-game from a forum post. Because i try my best to not make myself look like an idiot over and over (though i do fail sometimes).
I'm just trying to say while this change is pointless, i see it having very little negative impact on 99% of the users here. Anyone who's been foruming for more than a week knows what happens on a forum generally stays on a Forum, especially considering harassing someone in -game is against the ToS and most people who post on the forums care enough to not get their accounts banned.
And again i know its only 1 person, But i've been forumming for a long time and have yet to receive a single negative tell because of something i posted (and I'm not a very nice guy sometimes).