I can't be infinite backwards if SNR/DR doesn't measure as infinity.There is infinite inwards... Within the parameters of frequency response and noise floor dictated by Nyquist it is infinite resolution. You can't "blow it up and see the halftone dots". In this sense, it is like vector graphics. It doesn't matter what scale you look at it, within the boundaries of Nyquist, it is perfect.
No one is suggesting that you can "blow it up and see half tone dots", but rather that there is always quantisation errors or implemented dithered noise which put a limit on resolution. If I broadly understood @gregorio 's post, then the "infinite resolution" part cannot in practice exist separately to the noise and/or distortion part. Intuitively it makes sense and goes a long way to explain why increasing the bit depth or dithering and shaping the noise to outside the range where human hearing is most sensitive will increase resolution (and hence, increase SNR/DR), but infinite resolution? - I would be keen to see some real world measurements of digital audio no matter how much the bit depth is or how well it is noise shaped, that show SNR/DR approaching infinity.