Earlier quoted context omitted.
Omicron is not unstoppable. See mainland China. See Taiwan.
China has now had lockdowns in about half a dozen cities where omicron has been detected. It seems more slowed down than stopped.
Secondly, if you follow the different outbreaks in detail, you see that the Omicron outbreaks are not just being slowed, but completely extinguished. The outbreaks in Tianjin and Beijing look like they're over.
There will continue to be small, isolated outbreaks that occur when the virus slips through the border quarantine measures. However, China has showed that it is perfectly capable of extinguishing these small outbreaks one-by-one.