Yes, in fact here is a video of a pinephone running WhatsApp using Anbox: https://youtu.be/Y-9Wmki7DsU?t=2007

download the apk from https://www.whatsapp.com/android/, start anbox (this takes a while), install android-tools, adb install WhatsApp.apk, done. It also works with stuff like Duo Mobile, which is the 2FA my organization uses (which is interesting because it doesn't agree with my rooted lineageOS phone).

Anbox comes by default on current versions of Manjaro