No, but it removes non-linearity distortion from the output when combined with a suitable noise-shaper like LNS15 and high enough output rate (352.8k or higher), on Holo Audio R2R DACs. It is technically impossible to make R2R ladder that is accurate to 24-bits, not to even mention 32 (which exceeds what analog world can represent by several orders of magnitude)…
Correct setting depends on the DAC in question and requires some measurements to figure it out. Most other R2R DACs need lower values, 20 bits is a very very good result for R2R already.