We are not in a court of law where proof is necessary to make a point; rather, we are in a public forum where people can express ideas, concerns, opinions, pro or anti views, etc., based on the information we have been given or observed 1st hand.
As far as his motivations for preserving an 11 year old VERSION of a game we are still playing to this day? One can make many arguements for or against this. Going by Kern's history, a person can state that he is motivated only by becoming relevant again and at the same time promoting his new company (which he has done on his Twitter account). A person can argue that since he had a hand in creating WoW that when this topic came up he saw a perfect opportunity to do just that, given his past with the company.
Now, the other side can also argue that he's just doing this for the players. Recognizing their love for a game he helped design and wants them to be able to continue enjoying that experience. That he is just a good hearted person who wants to help people that lost something, and given his past with the company gives him a good opportunity to help those that he feels should be helped.
Neither side knows what his real intentions are; however, as I first sated, people are allowed to make a decision for themselves given the things that have happened during this issue.