It's exactly what you're saying. Workers wield collective power through the state in the PRC, that is their primary means. Tracking strike numbers isn't an accurate assessment of the health of the economic system or the support workers have for socialism. Instead, looking at metrics I've shared like worker confidence in the system and support for it directly state that people broadly support the system overall.
Your comments about Xinjiang were removed because they were Fox News-style conspiracy theory, not actual grounded analysis. I already linked what I recommend you check out.