It would be one thing if it worked. The OP admits that their kids don't initiate socializing but also claims they aren't poorly socialized. Blaming every parent but themselves when their parenting resulted in kids that don't seem to try hard enough.
Either you are I are reading it wrong, because I don't see anywhere in their comment where they say their own kids aren't initiating.
What they do say is that other parents are rarely initiating play dates.
Can you quote the part where they "admit that their kids don't initiate socializing"?
> My spouse and I find that we are overwhelmingly the ones calling to organize playdates rather than vice versa.
I read that as his spouse and he were organizing rather than the kids organizing with friends when they're together at school or camp. That's what my kids do unless it's a birthday party or carpool.
I didn't make this world.