The quality of cuts depends on both the cutter and the cutting system used. While discs are essentially plastic, just like a pressed record, there's a widespread belief that lacquer masters offer the highest fidelity with the lowest noise floor. Whilst this is likely true, not all cuts are created equal. For instance, we've experienced superior audio quality from PETG discs cut with a Caruso head compared to the same audio released on pressed records. So, it's incorrect to assert that lathe cuts are inherently inferior to pressings.
One thing to bare in mind, PET is now used for pressings using injection moulding and called 'bio' or 'eco' vinyl. So if you hear that the sound of PETG/PET is bad, it's just another myth.