No. Participation is usually that someone (or someones) from the distro itself becomes a member here and posts. If you look at the Amigo Linux forum at LQ, for example, you will see posts by "gnashley" He is an "Amigo developer" (it's his title) and he posts here quite regularly and answers questions.
Distro participation varies. Sometimes, in one of the "bigger" distros, the person who originally joined here may move on/leave their job and no one takes up their work here. Other times, the distro rep stays here and posts often.