I do have to agree with that. Of course I'm basing my agreement on the fact that I've seen things like Celestial Orochi who has absolutely no reason not to be released beyond personal decision, and the stuff by MugenFan which is usually punching bags of other authors he made out of spite and posts online just to taunt others.
As for rare's, well, I can say that while I do find it kind of annoying when I can't find a character I am desperately searching for. Sort of like a forbidden fruit angle: I want what I can't have. In this case, however, it's not that it's bad for me, it's just that I can't find any.