My kids are not having too much screen time. My complaint is that Covid restrictions have made the already-tough job of being an accountable, responsible parent almost impossible. Screen time is just the tip of the iceberg. You talk about sleeping in bomb shelters - how many kids have been told they now carry a disease that could kill if they get too close to someone, and what will that do to their mental and social development? How many parents now believe this justifies what would previously be called child abuse? Many of the ones I know, that's for sure.
At one time, it was considered brave to hug a HIV-positive person (and when the risks were unknown). Now, we selfishly impose social restrictions on those closest to us, to reduce an already-tiny level of personal risk.