It is "not" alleged that Jeff removed any posts from the MS forum at 5thwheelforums. The discussion was about what the admin there understood Jeff to do here on the Heartland forum.
While Jeff owned this forum, for his own reasons, Jeff did choose to remove some of his own threads and the ASK THE FACTORY forum.
When a thread is removed, so are all the replies to that thread. This would explain why some folks felt they had posts deleted. It is just how the thread removal process functions. Same for forum removals. When the ASK THE FACTORY forum was removed, all threads and replies to those threads were automatically removed.