> I wonder how this would vary between countries.

Sure, it does - cultures vary.

The thing is this:

"Culture" expresses the maturity of our species. And maturity is an ongoing and never-ending process. Which means: you can/shoud always be asking "what must still be improved?" (on a personal and then societal level).

Every culture contains (sometimes very) unhealthy elements. And it's our job to root those out.

Behavioral norms promoting social isolation is one of those immature elements of certain cultures.