I've given up on resolving disputes with those people.  Frankly, resolution is not possible.  All you have to do is look into his contributions to see an obvious pattern of vandalism.  It does not take an expert on the subject to figure out what's going on there.  What you don't seem unable or unwilling to understand is why those users are editing articles on Wikipedia in the first place.  There are two possibilities...

i) You don't have a history with these guys.
or
ii) You are involved in the same activities.

You have made it quite clear where you stand though.  You are as guilty as they are of corrupting the integrity of those articles, whether it is intentional or not.  Have a good day.