Not at all.
I'm saying, Joe who is a collector and his friend mike who is an official cgc witness decide one day to scribble something on a comic and pawn it off as ya we bumped into Samuel L Jackson in hollywood and he signed a comic, and said comic gets a yellow lable. It's very grey IMHO. It's too easy for one shady witness to help a buddy out and make a ton of cash on the side.
I think if there is a signing at an LCS or a convention and there is proof said celeb was there then it gives more solid credibility to said signature.
I was also naive in my original statement. I wasn't aware CGC had stopped this method, but seeing as how it was allowed before brings credibility issues to me personally of some of these super rare signatures.
I don't question any of the signatures gotten by yourself or any of the facilitators here. I'm 100% confident they have all been gotten above board, and I know with yourself personally you always post pics on your FB page with yourself and said celeb