I think it still applies relatively well? If you are trying to limit growth to avoid x-risk, and anyone else is purely maximizing growth, they will grow relative to you, and your growth-limited, x-risk-avoiding faction will become irrelevant in size as the other factions grow. The point about requiring unilateral buy-in still applies: if you want to slow growth to avoid x-risk, you need unilateral buy-in, or you will quickly become irrelevant compared to people maximizing growth.
The main arguments being made against growth on LessWrong are about increasing x-risk and not addressed here.
I think it still applies relatively well? If you are trying to limit growth to avoid x-risk, and anyone else is purely maximizing growth, they will grow relative to you, and your growth-limited, x-risk-avoiding faction will become irrelevant in size as the other factions grow. The point about requiring unilateral buy-in still applies: if you want to slow growth to avoid x-risk, you need unilateral buy-in, or you will quickly become irrelevant compared to people maximizing growth.