Every single story saturates the perception-pool a bit more. The more normal it appears, the more people will realize that windows isn’t all-present anymore, and that it’s not a weird thing to do to try Linux.
To me, that would be more like “I stopped eating junk” posts. The world needs more of those.
That is how I see it, at least.
Would a non-linux user visit any such sub-community though? Perhaps Linux news and discussions would be better off in a sub-community? Actual users are more sensible to such distinctions. Many potential new users have a hard time choosing a distro already. Adding yet another choice might be detrimental to the cause.