Article for context:https://www.theverge.com/2023/9/12/23870522/iphone-15-pro-max-thread-smartphones (Ik that I am talking about multiple companies when I refer to android companies but many singular companies make more innovations in the phone space compared to apple)
Tbh you can do that on a regular phone using a popup player on YouTube (I recommend NewPipe).
Now the true reason to be excited for fold phones is DS and 3DS emulation 🧐