Let’s say I don’t like the quality of bluetooth headphones and I tend to use my phone heavily during the day. I currently end up using a battery pack with a wired headphone ... this won’t be possible as you’ll have to plug either headphone adapter or battery pack.

One of the reasons some don’t like it

I shouldn’t need a fucking adapter to plug my headphones into my phone. That’s not adding functionality, it’s adding complexity, and for no good fucking reason.