GearScore addon isn't a bad thing, and doesn't say all, it's just a simple and fast way to know your stuff.
When a man doesn't have gs, he inspects you and the sentence is the same, wft your are blue ! or your stuff is a little short.
The only problem I see, are people who ask 6k5 gs to pug icc25. addon isn't a bad thing, it's people who are idiot.