What’s realistically stopping apple devs from adding separate media controls?

For example, on android, if you’re on a call and you press the volume up or volume down button, it pops up with a slider that you can alter like: media volume, ringtone volume, call volume.

I’m interested in this because I have had multiple instances a day where I would love to watch YouTube or listen to music or watch TikTok, or play a game, while on a long call with someone but I cannot do that if the volume is uniform.

What are the odds of Apple devs adding something like that to iOS in the near future? It’s what I really miss from android.