Not totally sure of the relevance, but you’re thinking of K.C. & The Sunshine Band’s 1975 That’s the Way (I Like It).

Tell the iPhone that the output isn’t headphones and it’ll stop warning you. Plug it in, then head to Settings -> Sound and Haptics -> Headphone Safety -> USB Audio Accessories.

This is the dumbest comment I’ve read all day but I’ve been chuckling about it for a good couple of minutes.

they want the ability it provides to die.

Terminal Server licensing will be bringing them in a tidy amount of money from on-prem enterprises, but it’s true that Windows App has a heavy focus on Azure and will definitely be aiming to push people in that direction - it can’t even connect to remote Windows PCs.