Another one who’s kids wore them at daycare in the US due to the mask mandate. I personally felt it was ridiculous. As if a soggy piece of cloth hanging under their nose would actually prevent covid spread in a group of toddlers spending all day together in close proximity.
Thankfully our daycare clearly felt the same, so although they were forced to wear them so as to not lose their license, they weren’t exactly militant with them and gave them lots of mask free time.
My DD didn’t seem to have an issue with it though and she was perfectly happy to wear a mask on short public outings from age 2