I think something is lost in translation here.
Mel was always about people posting pics of themselves and posters, which never made sense to me on any level, hence my poor attempt at a joke.
I will post a pic of a poster now and again, when I have a camera and a poster handy, but don't feel the need to post any personal pics of myself and do not plan to do so.
People who have an issue with that can get over it. Or not, I don't care.
Nothing was lost in translation. Of course Mel posted photos, and shared a lot of cool information here, which also made him the ultimate target for trolling.
To some people, part of the beauty of the internet is they can just appreciate stuff that other people people share, crack jokes about others, etc. and remain as anonymous as possible so they don't put themselves in a position that the same could happen to them. They don't want photos of themselves on the internet, that could be mocked in the same way that they do to others. A lot of people don't participate online because of that kind of garbage. My initial observation still rings true, that the people who don't post photos of themselves or their collections are often the most critical.
The bizarre thing about the internet is that everyone is on some level of anonymity. Of course, some are at the extreme ends; whether they're ultra anonymous and share nothing about themselves (this end generally includes those who partake in extreme trolling), or the opposite end where people share every little facet of their life.