So the playbook of the CCP in cities seems to be push and push and push until the people revolt and then you cull the activists that are willing to fight by running the army through the streets and shooting everyone that's revolting. This has been a thing since Maos purges and it's the same thing they did in Hong Kong by slowly adding stupid rules until the people willing to revolt had enough.
Zero covid seems so stupid that I am inclined to think someone is just taking advantage of this to identify and purge citizens that are willing to violate government mandates.