Geeezzz that's cruel. I remember My self as a kid being grounded locked up in my room for hours and it is a torture for real. Adult may stand lockdown and find other stuff to do to keep them busy.
But a kid tho with all his energy and enthusiasm for playing and interaction can't be locked up not even an hour at noon forcing him a nap.
Just imagine how complicated and perplexed for a kid to go through a tough time with a pandemic that he has no clue of wtf is going on outside and feels somehow punishment for doing nothing wrong.
It's cruelty!