[alias_neo]

It's scenario 1. My children are still young, pre-school and reception so no such groups have come up yet. The odd parent that wanted to contact me has installed Signal or sent me SMS (RCS). For anything else, my wife is still on WhatsApp so she relays messages if/when they come up.

EDIT: re: Work, my colleagues are all on Signal, we have lots of Signal groups to communicate.

[rickdeckard]

So in a nutshell "I have someone else on WhatsApp who keeps me in the loop"

Expect this to scale, in my experience you can move your family over to another service. Groups of families your kid is somehow in contact with, not so much...

[alias_neo]

it's a challenge for sure, however, I've managed to get my extended family all on Signal which is about as much reach as I could hope/expect to achieve.

That's my household, my parents, my grandparents, my parents-in-law, my sibling(s), cousins, aunts/uncles, sibling(s)-in-law, friends, and my colleagues.

Some of my children's' friends' parents who I'm friendly enough with also began using Signal so we can communicate. Those who are school friends but not outside-of-school-friends, we can communicate with via the school's app.

Almost anyone I could want to communicate with is on Signal, all of the family is directly or indirectly because of me, and friends and colleagues has been a combination.

Anyone I don't know well enough to have a conversation about privacy and Meta being the antithesis of it, is not likely someone I need to communicate with.

All in, my wife, on WhatsApp, isn't really "keep[ing] me in the loop", unless we're messaging a trades-person or similar, but that's infrequent enough to not be an issue.