Problem is when people start acting as though Covid-19 is akin to the bubonic plague. If it didn't kill people who are old or have underlying, no one would have batted an eyelid. Once all the vulnerable are vaccinated, the worst that's likely to happen to those still waiting is not much worse than a bad cold. (And, yes, I know there are exceptions, which is why I said likely. It's not likely I'll fall downstairs and kill myself today, but someone, somewhere will.) I've every sympathy for the extra workload, but trying to portray the classroom as some kind of existential biohazard is OTT imo.