That tells you nothing about a trend though, right? We'd have to look at this over time to see if people are actually moving to/starting to use signal.

If you look at the data over time, you'll find that both Messenger and WhatsApp have grown MAUs every quarter since their existence. You're free to draw your own conclusion to the question.

Oh, I'm not claiming that Signal is taking over everywhere, just that in some groups of people it's becoming quite common.