It seems that many popular mobile apps nowadays have their own design language. I like uniformity between my apps so I greatly respect when an app developer takes the care to design their app to follow their OS Human Interface Guidelines.
For example, apps like Apollo (and wefwef/Voyager for Lemmy) rose to popularity partly due to looking and feeling like native iOS app
Lemuroid and Libretube are good examples. I personally think they’re beautiful and match great with stock (Google) Android Material Design