And sometimes you have to take a step back because someone pushes you.
I'm old enough to remember getting a cordless home phone. Being able to walk around the house and talk instead of sitting by the phone jack was awesome. And there was very little downside, because whenever you weren't using the phone, you put it on the cradle and it was charging.
Ethernet to WiFi was similarly good. I like that I can sit anywhere in or near my house and use the internet. There's not much downside.
But headphones? If I'm listening to a podcast on my phone, I'm going to have my phone on me. I'm not going to walk away from it because then I couldn't control the playback.
A wireless connection to something I'm going to be touching while I use it anyway doesn't do anything for me. I get zero freedom of movement from that. It just means another thing to configure, another thing to charge, another way things can be incompatible or fail.