So before you can message anyone you have to download whatsapp? iMessage is preinstalled and is also e2e encrypted. Idk if I’d rather Facebook or Apple (who can access iCloud backups of normally otherwise encrypted data, etc.) in charge of my messaging infrastructure, honestly.
Americans with Android are left to use literal SMS which is atrocious, or a different messaging solution, probably whatsapp I guess
edit: I don’t like iMessage or the current state of messaging in the US. I feel like all the default messaging apps should be able to communicate e2e encrypted via some shared standard or something-- it’s weird to have to go third party