Agreed, for this reason I modified my DT770 with a miniXLR socket. There are multiple tutorials for this on the internet.

I don't think the DT770 will be updated though. Recently Beyerdynamics released the DT 700 PRO X, which seem like the "successor" and they do have replaceable cords.

You vote with your money. I went through a ton of "gamer" headphones in my teens, all of them meeting their doom because of the crappy cables. Then spent a bit more on ones with a replaceable cable that those lasted until the plastic broke. Then I spent decent money on some sennheisers and they've been going strong for like 6 years with so signs of slowing down, too bad they sold off their consumer product division not that long ago.