In my six years Motorhoming, I have been told to F off twice, had damage done to my van once, (vandalised mirror),water bombed once, had car horns tooted at us countless times whilst parked up, and threatened damage to our van if we remained, which we did, and no damage was done.
In return, I have never verbally or physically abused anyone, (and I have never witnessed any other van owner behaving that way), I have never left any waste of any kind, I have always tried to be considerate as to were we park, picked up mess left by others, paid all my taxes etc.
And do you what, I reckon I speak for 99% of the posters on here, and the vast majority of Motorhome owners in general. Quite frankly that poster is a disgrace, who ever put it up needs sorting out, and when did wild camping become illegal.