See you're referring to childcare, which is absolutely a necessity. My post was in reference to those who can look after their child (SAHP) for example, who simply believe their child needs to 'socialise'.
In the grand old days one wouldn't sit at home all day one-to-one with a baby or toddler. You might go to the shops with them (not allowed unless essential), call round friends' or families' houses (not allowed), go to a one o'clock club (closed), possibly more recently have playdates or a visit to a museum, cafe, soft play or swimming (closed, closed, closed closed). You certainly wouldn't have the entire infrastructure of your life dismantled overnight, parks closed, nurseries shut etc.
I'm a PT key worker, I've been juggling my work (I run a food bank) with care of DD (2/3) since March. We're managing and we're very lucky to have plenty of resources etc to throw at things but let's not pretend that it's a non-stop festival of baking, crafts and jumping in puddles.
I resent your post because it sails quite close to "oh those lazy SAHP, why did they bother having kids anyway if they want to chuck them in nursery" (which I have read on MN). Toddlers and older benefit from being in nursery, socially and otherwise. Yes my child needs to see other people beyond her mum and dad. Not at the expense of nursery workers' lives or health, but she does.