This is so true.
For 10 years (2011 to 2021) I carried both an Android phone (personal) and an iPhone (work provided). Both phones were updated about every 2 years.
Over those years I've watched IOS get closer and closer to Android. The funny thing is Android has also been creeping towards IOS in some areas, though that is to a lesser extent than the other way around.
In recent years they've gotten pretty close to each other in basic functionality.
I still prefer Android, but IOS is much less annoying to use than it was a decade ago.
I've never had a Facebook account, I've never had an insta account, but I do use WhatsApp.
Pretty much everyone I know whether old or young uses WhatsApp. When I was travelling, a lot of apartments, hotels and booking services used it too.
Seems to be the one messaging app that cuts across all generations, countries and also the Android/IOS divide.