Save your money and get a decent DAC with a good USB interface.
We’ll just have to agree to disagree on that. If there was a real problem with the USB interface, you’d notice it for sure (e.g. dropouts, glitches in playback). Otherwise the data is getting from A to B just fine.
Think about it - if the USB ports on a motherboard were changing the bits, then your mouse and keyboard wouldn’t be working too well. You’d have inadvertent typos and jumping mouse cursors all the time. The PC would probably be unusable.
Money is better spent on improving the rest of the setup, whether it’s speakers, amp, or DAC (probably in that order). You simply don’t need special USB ports for audio.