As for the details, call me making shit up all you want
To me, Evergreen is soon begin to phase out and yet there is still no OSS support, not even 2D accel. That is one EPIC FAIL for me.
Anyway, the OSS support is there if you're willing to compile it and work around the bugs.
More to the point, who would actually go out and buy an Evergreen card, and then a few months later throw it away for a brand new SI card? That makes no sense - you should care about Evergreen support for more than just the few months when they are brand new because they will continue to be in use for a long time.
I really don't know why i'm even bothering responding to such an obvious troll, i must be really bored tonight.