It doesn't hurt, but it's also useless.
I personally don't see the reason behind getting frustrated over comments on old pictures. If people want to comment, why stop them? That's kind of pointless in and of itself. So what if someone comments on a really old pic? It doesn't hurt. And they're just admiring the pic. Or giving useful info. Even if, at the time, the info wasn't necessary when shuu first started or whatever.
-Shrug- I'd rather drop the whole "YOU CAN'T COMMENT ON OLD IMAGES, STOP IT DAMN IT" attitude some people seem to carry when it happens... >3> I'd like to comment on things without getting scolded for expressing my love or info on a pic.