As for the rubbish about it being their first post and, therefore, not to be trusted, the insinuation is childish and invalid. Imagine that there is another forum, one which Pes, say, is not yet a member of but that you are. Imagine there is an ongoing discussion to which Pes, newly joined, contibutes his first post. Do you automatically dismiss his observations as incorrect and untrustable because he is a 'noob'? If so, then you are an idiot. Judge a post on its content not just on the poster's join date.
But this is the internets, this is how it works. It's hardly like people were all 'zomg n00b gtfo!!11!', a little light hearted ribbing isn't really worth the effor of climbing up on a soapbox, surely?