The WhatsApp voice message is very common in Spain. I always find it jarring when I'm there, mostly because I'm not used to it, but also because it seems to defeat the purpose of the messaging app: I can't listen to your voice message on the bus, for instance.
It's so normalized there that I wonder whether this is a particularly Spanish habit. Maybe there are a bunch of countries where people routinely leave each other voice recordings on WhatsApp/Messenger/etc, and I just haven't been to them yet.