The PRC has a Socialist Market Economy
No they don't, they have a capitalist economy. Absolutely nothing about China is socialist. You are eating up and regurgitating their propaganda without question.
Advocacy for Socialism isn't necessarily based in mystical properties of participating in a collectivized structure, but more of a materialist question of efficiency.
This is more of that vague word salad I referred to earlier. You didn't say anything here. "mystical properties of participating in a collectivized structure", "materialist question of efficiency", these phrases don't mean anything. You're just stringing polysyllabic words together to sound smart.