This is true in the sense of people are using different chat/networks as a way of isolation from different groups. I would never want to have my (most) work colleages part of my WhatsApp (or Signal). A broad section of population has deviced

1. facebook for family

2. WhatsApp for immediate connection

3. Email (mostly Gmail) for all documentation stuff

4. TikTok for just be yourself (add discord etc for the appropriate group)

5. Instagram - for show off - display the best of your life.

6. LinkedIn for I hate but have to like this manager's posts!

7. slack or teams (as dictated by the workplace)

(In some ways I love that common people have eventually segregated and some how trying to bring some sort of privacy/isolation (the way they think is acceptable without FOMO)