“Look ahead” to determine optimal groove spacing doesn’t have to be done digitally, even though digital makes this much simpler.

I’d guess that musicians and producers using an all-analogue recording / mixing / mastering process where they have zero digital stages to the master tape are very few and far between nowadays. Kevin Shields for one, but he likely has other options for his analogue master disk cutting, and only needs to attend disc cutting once or twice a decade/century.

A transparent digital stage for the master isn’t going to make a huge amount of difference really, and the limited bandwidth of vinyl compared to digital means that the vinyl master has to be squashed and limited regardless.

There’s been a market for this for nearly 30 years (and the rest).