I haven't noticed this. One of the things I love about this hobby is just how accessible it is, it appeals to people from right across the social spectrum, blue collar to white collar and beyond.
Of course some bikes and parts are way out of reach for many of us, me included, but we still love to see them, especially if they're being rescued and/or ridden. I often comment on stuff that is worth silly money and have never felt like my thoughts weren't welcome because I'm not in 'that class' of collector or whatever.
If anyone did act that way I probably wouldn't notice because honestly I'm here for the bikes first and foremost, with that said my experience with most people I've interacted with on here has been overwhelmingly positive.