Well, that's sad. So they basically have every incentive for there not to exist decent Linux drivers until the demand is large enough that they have to do a great job at supporting the platform?
I mean, as long as they make decent proprietary Linux drivers (which is what they are doing right now), I would not complain too much. They have been catching up in terms of features as well (compared to Windows drivers), so they are very active compared to the sleeping engineers from AMD (who like making announcements but do very little visible work, which renders their credibility close to zero).