Well, that's not how it happens. Sure, people can believe what they want and I'm sure that some will try their damdest to promote the misconception that this is how it is as they seem to try and pick up on every little thing like that.
First off, I very rarely delete people's posts - I prefer to leave the evidence there for people to see. The only times posts have been removed wholesale is when people have had problems with being identified and I've tried to help them out or if they have simply been spamming or posting porn.
Again, whether it has any credence really depends on who is saying it and why. I would not be surprised if it wasn;t the same old people doing the same old stuff. They may be deleting their posts ... but it may be because of other reasons such as them containing damning information that they now want to remove so as to portray things in a different light. I don't know 'cause I don't know who or what posts you are refering to and frankly, neither do I care.
To be honest, I try and run the forum without worrying about what people think ... I just try to do what I feel is right. Take it or leave it. This doesn't mean that I don't care what people think of the site but I do not do anything (or 'not' do anything) just to be popular. Perhaps that is why some have so much 'vitriol' for me? ... because I didn't show them as much respect as they thought they deserved and didn't allow them free reign as they wanted.