The cable has to carry the negotiated power safely. It’s not unnecessary, it’s absolutely critical. I’ve personally seen and diagnosed the result of when this fails.
For your low power applications there is no need and the spec allows for that.
It wouldn’t be critical if the cables were suitably rated for the specification. If you put a 0.5A cable in a 3A circuit, you’re gonna have a bad time. If you use a 3A or better cable, then you don’t need a cable chip to tell the actual devices to only work at 0.5A.
The cable has to carry the negotiated power safely. It’s not unnecessary, it’s absolutely critical. I’ve personally seen and diagnosed the result of when this fails.
For your low power applications there is no need and the spec allows for that.
It wouldn’t be critical if the cables were suitably rated for the specification. If you put a 0.5A cable in a 3A circuit, you’re gonna have a bad time. If you use a 3A or better cable, then you don’t need a cable chip to tell the actual devices to only work at 0.5A.