In addition, I think that you already know that you have a fairly particular definition of "electronic musician" that actually excludes a lot of the electronic music composers and performers who have traditionally found Linux to be fairly hospitable place. These are specifically people who are not in search of new synths or FX units with which to play relatively conventional compositions with (perhaps) rather unusual timbres, but instead want the control and possibilities presented by tools like SuperCollider, PureData, Common Music and so on and so forth. I don't think that one group is more important than the other, but I do know how labels can be a problem, both in terms of a reduction in cognitive distinctions and also in social exclusion.
--p