I take you don't have children? I have, and they do regularly socialize, and none of the families I've ever talked with, mentioned any form of damage due to this.
Social isolation during the first wave - that was a real problem; there was concrete suffering.
I actually have an alternative take on this: if society is not able to do something as simple as consistently use a mask, there's no hope to do something that requires concrete sacrifice as mitigating global warming.