The ksc75 is not an IEM. You're also mentioning a completely different (and more expensive) dongle than the one in the comment I reolied to.
And no, more wear on the usb-c port is not the only downside. In some places (e.g. where I live), you simply can't buy most dongles. I always have to travel or import stuff. You also have one more thing that you need to buy, carry around and that can break.
Stop being a corpo simp. Makes you look dumb.