Personally I would wait till the wheels fall off. Consider it like this: if your existing headphones work fine, would you pay the price of the new headphones purely to not have to use the cable again. To me that seems like a waste of money, but it is your money and who I am I to tell you how to spend it? If you were thinking of upgrading them anyway, regardless of the cable situation, then I would maybe consider it. It seems a lot of money when you can just unplug the micro usb and swap the cable to usb c, which takes maybe 5 seconds? Only if you are charging on the go, with other usb c devices then maybe it makes sense.
I guess there is such thing as stupid questions.