Bluetooth headphones is not there yet.
It is a nightmare to figure out what sound quality you get in bluetooth headphones/speakers today.
To send/resive audio via bluetooth you only need to support SBS audio. That is has bad quality compared to bitrate..
Some support MP3/AAC/LDAC/Apt-X/Apt-X HD/What ever.
The problem is that both sender and reciver have to support the same format for it to work. You can't just get some headphones that support Apt-X if your phone do not support it.
And most of the time it is almost imposibel to see what the phone/headphones/speaker is supporting. So it's but and hope for the best. Or spent a lot of time seatching the web to see if anyone have an anwser.
And after all that. Then there is also how good is the DAC in the speaker/headphones.
Most phones today have a good DAC. But headphones can support all the best audio codecs. And have a crap DAC. So it sounds bad anyway.
And putting a good DAC in the speaker/headphones also bumps the price. And then you have an extra thing to recharge.
Sure in the future when they have better standards for sounds. And you are sure you get something good. No matter what you buy.
But we are not there yet.
So why remove the 3.5 Jack stik. It works. And it has yet get a usefull replacement.
Dropping the floppy for CD-Drive and laver for USB stik.
Sure. The CD was an improvment over the floppy. And the USB stik had been improved a lot when it replaced optick drives in computers.
It would have faild if they did it when we only had the USB 1 standard. But it got better and storgage bigger and chaper. So you could do the switch.