That may well have been me! I've been playing around with Waydroid on my Pinephone, and just installed Whatsapp to try out. I didn't message anyone, as it's a new number that I'd like to minimize FB knowing about, but the browser, Whatsapp, and the Voipms SMS app are more than smooth enough to be usable (though far from modern-phone fluid).

I've said previously, and will say again though: the Pinephone and Waydroid are still very rough. For example, I'm going to have to figure out why Waydroid, which used to be full-screen, now only takes up half the screen. So if you occasionally need an app that's Android-only, maybe you can make the Pinephone work now. But likely only if you're at least a little bit fanatical.