Yes of course there will be, any diseases could cause long term health conditions in some of population. Flu too can cause long term damage too. But does it justify lockdown ? closing down school ? No. Especially when its still unclear and lacking in stats.

>why should we even have bothered eradicating polio?

Because it doesn't require locking down significant part of the population...

I remain skeptical of lockdowns, but it was very common to close down schools in areas where polio was spreading.

Polio cripples 25-80% of kids that survived it, and kills 2-5% of them. Polio mainly spreads through kids.

https://www.who.int/news-room/fact-sheets/detail/poliomyelit...

Comparing covid-19 to polio with regard to the danger to kids is absurd.

For the whole school year? Or for a couple weeks at the peak of the outbreak?

Not for the whole school year, no.

They didn't have Zoom either, so we don't know what they would have done if remote learning had been possible.