First of all, you're forgetting that the actual problem is that the headphone jack does not require you remove bluetooth from the device. The issue here is giving user less options and more costly "solutions".

The cable often gets tangled, and it's a pain in the ass to untangle it

Git gud. It's not that hard to roll up the cable so that it doesn't tangle. Worst case scenario, you can buy a small case.

The cable can often get snagged on things, and if that happens the best thing that can happen is that the headphones can go flying out of your ears. The worst thing that can happen is that the phone goes flying out of your pocket and smashes on the ground.

Run the cable through your shirt. Problem solved.

The cables can get dirty and frayed, and if they get too frayed they can break or get worn down so they have an iffy connection.

Use headphones with a replaceable wire. That way you can use a cable with or without a mic or use different lentghs. Hell, you can even make your own and they're cheap. Even if the wire isn't easily replaceable, most headphones can be fixed with a bit of patience and a soldering iron.

Even when the cable isn't tangled, just arranging the wire so it's out of the way, long enough to get to your ears, but not so long it gets tangled can be frustrating.

You're just doing mental gymnastics at this point.

Trying to use your phone for anything else while your headphones are attached can be a problem. Say you want to take a picture of something, or pay for something using NFC, you have to be careful of the cable. If you had the cable tucked into your shirt or zipped up in your jacket so it's out of the way, now the cable might not be long enough anymore.

Or you can, I don't know, unplug the headphones for 2 seconds.

Because of the wire, you're limited in where you can put your phone, and your head has to always be within a short distance to your phone. With a wireless headset you can choose to put the phone in a knapsack if that's more convenient, and when you put down the knapsack you can take a few steps away from it without losing your connection and interrupting whatever you're listening to.

Redundant. Also, put your phone in your pocket and stop whinin'.

If you're doing something like working in the kitchen while listening to music or a podcast, you can't put your phone down on the counter and use it to look at a recipe, because as soon as you have to move to go get another ingredient, or to move from the cutting board to the sink, you have to pick the phone up again. And that can be a real issue if you have goop on your hands and you're moving to the sink to wash them off.

My man, are you allergic to speakers? You're cooking in a kitchen. Lose the headphones.

In cold weather / winter you might want to have your phone in a jacket or something. If you go inside and take the jacket off you either have to pause things while you transfer the phone to another pocket and rearrange the wire, or you have to do this complicated dance where you clear the wire and move the phone without accidentally yanking the wire out of the phone or out of your ears. With a wireless headset you just take the phone and move it to a new pocket whenever that's convenient.

Skill issue. Run your wire underneath your jacket and you won't have this """problem""".