If you are from the U.S. sure, serves the interests of your country

If you are not from the U.S., then no, it's not a replacement for WhatsApp, it's the same

https://en.wikipedia.org/wiki/CLOUD_Act

"but E2E encryption my dude"

You have forgotten about RSA, my dude

Why Signal, why not X, Y, Z? ask yourself why something from Cali always gets picked up and talked about, but people's favorite? nevaaaaaaah