Yeah, I mean I assume most anyone with younger kids is going to have trouble being productive (kids stuck at home, no childcare, no babysitters, no older relatives to help, etc.) which says little about WFH in general.
Yeah. I have two kids. Now that the older is back at school and the yonger is in nursery or with her childminder when my wife is working, it is significantly better working from home. After five months of working a weird split shift pattern it's really nice to be back to a more regular pattern.
(This is in the UK, where our infection rate is pretty low now, how long that lasts remains to be seen)