Thanks for this thread really. With a few things you said you exactly voice what used to frustrate me to no end before I met my now Master and stopped caring what other self-proclaimed dominants thought of me.
I've been called 'not a real sub', 'bad sub' etc. and nastier things and I used to hate it so much. In fact, if someone in a chatroom starts out with wanting me address them as Sir or Madam etc. I might sometimes humour them and play along but they sink in my opinion and usually I just won't.
You're definitely not alone in feeling like this and I know there are enough dominants out there who agree as well.