Back in the day when they were standard in Androids we received tons of complaints about our chat app from users, "why do you use these fugly blob emojis? Can't you have nice ones like on iPhones?"
Note that Microsoft also had to do a refresh of all their emoji for Windows 11.
For now the Apple/WhatsApp like aesthetic is king. But it’s so fashion driven, you never know what’ll be in tomorrow.
Whatsapp just used Apple's emoji font on android too, for a long time. Eventually they drew their own, often mirrored, versions in the same style.