That's an example of hostile posting.
Many such people may have been visiting occasionally. They may have been unwell, put off buying a hive, been unable to obtain a nuc. There are all sorts of circumstances that might account utterly reasonably for their not posting, including, yes simple lurking. And they might have been lurking and wanted to ask questions, or be experienced and insightful beekeepers and wanted to posts, but been put off by the noisy and aggressive, and, especially, the gang culture.
Your 'the hell' is a blanket condemnation or anyone reticent to post, and of itself will tend to put some people off posting.
So, more attention to manners, less acceptance of overt hostility would be good.