So basically, he is trying to punish everyone by deleting their posts, but I doubt it's any kind of punishment. I don't think any active forum members will be affected. But it's disrespectful.
Eh, I just woke up and found my inbox had way more messages in it than usual, and a few of them were notifications that Ratimov (I assume; I didn't even look that closely) deleted a few of my posts. Don't know what his motive is, but it doesn't affect me nor do I find it particularly disrespectful.
Why would having one's posts deleted affect anyone other than wasting the time of the person who wrote them? In any case, that's always the chance you take when you post in a self-moderated thread, right?