I asked Can I use the WeDo USB hub with normal Linux distributions? and tagged it with linux, which was subsequently removed along with the comment "I don't think we need a linux tag". Another user asked https://bricks.stackexchange.com/questions/698. While I don't expect Linux-only users to be in the majority here, I do think that linux would be useful for those who are looking for Linux+Lego information.
As another example, LPub doesn't natively support Linux, but I've ported it to Linux. (Published on my blog.)
So I think there is room for questions that are directly related to Linux but Lego-centric here. Given that, I think linux would be useful.
What say you?