Statement of 'support' and 'opposed' are regularly accepted in the GA forum. This was raised in a Moderation thread already, where it was shot down quickly by Wrapper (a then-moderator). In fact, Araraukar, you actually were in the thread . . . in support of not implementing such restrictions:
Araraukar wrote:Wrapper wrote:GA is generally RP, SC is generally GP.
And most GA regulars, like me, completely ignore the existence of SC, since it is basically Gameplay...
I don't think the support/no support posts should count as spam - like others have said, they're often the first post of someone new who dared to poke their heads in the door.