In my experience, most of the time this can be solved by resetting expectations. Once people learn that asking basic questions won’t open them up to mockery, things move a lot smoother for everyone.
After all, a culture on 1:1 communication has a lot of downsides. The same question gets asked repeatedly, replies don’t become searchable, the same people (usually the most experienced) end up being constantly tapped for answers
That's key, it has to be considered safe to ask questions. Anyone mocking or showing contempt to another on a channel would be immediately reprimanded in private by managers at my company.
