About users with hidden agendas

I know of a gentleman here that continuously posts and goes after people and does not disclose who he is.

Then how is he a "gentleman"?

I have seen this here and other forums. Sometimes it is not just the dealer, but regular posters who try to get "too" involved. Supporting a product/dealer is one thing. But when the posters try to defend a dealer - that kind of comes off as if they themselves are the dealers or have some agenda/motive.

Live example of "agenda" is a thread that is updated on a daily basis of a certain obscure brand of DAC. (I think they try to keep it alive, with the same 3-4 people). The moment someone posts facts about the manufacturer or dealers, 2 posters immediately jump in with response to protect. This has happened multiple times. I have not seen users protect brands and threads so seriously.