The 5v line can have a negative effect on the dac, that's not in dispute. How a different USB cable could make a difference is in dispute. If you have a noisy 5v line fit an isolator, or break the 5v line in some way if its only needed for the initial handshake, fancy cables, silver plugs or whatever bolocks with have no effect, a filter or a switch will, could.
Kuzma Stabi/S 12", (LP12-bastard) DC motor and optical tacho psu, Benz LP, Paradise (phonostage). MB-Pro, Brooklyn dac and psu, Bruno Putzeys balanced pre, mod86p dual mono amps, Yamaha NS1000m