[deanhills]

And back to the topic for Whatsapp. I think for most other users, normal chats do not really need encryption. As far as I can remember, Whatsapp also did not have encryption for many many years, and just started introducing encryption on around 2016.

That is true.  Whatsapp only started to introduce encryption in 2016 and that was after Zuckerman had acquired Whatsapp in 2014.

While I was looking at why Whatsapp was acquired by Zuckerman, I found this interesting article:
https://www.buzzfeednews.com/article/cha...t-whatsapp

Almost so simple but totally makes sense why Zuckerman paid 19 Billion Dollars for WhatsApp.

WhatsApp was sending 8.2 billion messages a day compared to Facebook Messenger’s (on mobile) 3.5 billion.

From discussions at various Forums where members discussed their preferred app, quite a large number thought Telegram was much simpler and more sophisticated at the same time.  So I'm beginning to think that once WhatsApp has lost those large numbers to Telegram, possibly they won't be returning.

On the other hand there are also large numbers of users who are used to Whatsapp - like in the community I live all communications happen with Whatsapp - Whatsapp me - Are you on Whatsapp - always happen with communications. When I first arrived in this community I wasn't on Whatsapp and soon - even though I didn't want to - had to be if I wanted to be connected.
And now all of my contacts are connected with WhatsApp with lots of history with chat threads.  I won't change from WhatsApp until I see something that gives me cause for needing to change.  Which is when Facebook related messages start to pop up in my Whatsapp.