Interestingly here in Germany you can live in your whatsapp free bubble easily...until you get a child. Everyone I know gave up at this point (at least one parent).
Same in the Netherlands, School WA group, Class WA group (for both children), Sport WA groups (for both children), Children's birthdays WA groups, Family WA groups, Neighborhood WA groups (oh yes, we see this in many streets: [0])
[0]: https://duckduckgo.com/?q=whatsapp+buurtpreventie&t=ffsb&iax...