WhatsApp is easily the most used chat app outside the US and has never gone away. I live in South America and it's HUGE here, specially since IPhones didn't caught on down here, so we don't use whatever app the US public uses.
@el_bhm@floppy you americans are making a fool of yourselves in these threads, there are tons of comments about whatsapp being old or only for drug dealers & sex workers, and it's so funny how out of touch with the world outside of your borders y'all are. In basically any other place of the world; universal messengers like WhatsApp, Telegram, or WeChat are the de facto standard.