Remember that you can delete your Meta accounts and have nothing to do with them. It’s not hard to do.
This means deleting real-world social connections. Meta owns the interwoven communication hubs of many local communities.
Let me provide an example. My swim team coach uses WhatsApp for all communication, including frequent pool schedule changes. They have strongly resisted change, as it is too much work to get 50+ subscribers to move to an alternative platform. They are the only local choice; this team is where my friends swim. Sure, I could work tirelessly to convince everyone to switch. However, most of the members use WhatsApp for other communities (eg triathlon and open-water clubs). Introducing an alternative incrementally means each member has to manage N+1 apps, etc. Importantly, super nodes (coaches, multi-club parents) with the most connections offer the most resistance: things work for them, why should they change?