My kid's in day care. He's gotten a dozen diseases since starting. For all we know one was covid. With all this prevention none of these other diseases were stopped so why would anyone think covid could be stopped? It clearly can't.
The interventions deployed against COVID had indeed stopped a notable disease - influenza. It is noteworthy that these interventions were designed to fight the flu, apparently because that was the public health playbook at hand. But I agree it is remarkable how interventions which could crush the flu don't seem to bother any number of common cold viruses much at all.