what has WhatsApp to-do with that now lol. i also don't like common standards in some cases cause that boring for development and doesn't push tech forward. am a software engineer and i also don't use some standards for my software. i dont adopt RestAPI standart in my APIS i use my own Proprietary meansIt is the same story - again. Apple was the only company that refused to switch to USB-C.
And, when you read the article, it also remains the lone holdout to implement RCS.
Apple hates open or common standards, cause standards or compatibility violate its „lock customers in, lock competition out“ guideline.