Many "all analogue" vinyl records still have this digital process because hardly anyone knows about it. The only way to be sure you are listening to "all analogue" music is to restrict your listening exclusively to music from before the 1970s, as digital recording was happening in the early 70s, digital editing in the mid 70s, and then towards the end of the 70s digital delays started to establish themselves as the new standard in vinyl record cutting racks. Any reissue of a record made in the 50s or 60s was probably recut from analogue tape using a digital delay process in the lathe, unless it was specifically mastered by one of the very few studios who genuinely offer all analogue cuts from tape, using preview deck modifications on their tape machines. To me, all of this purity is stupid anyway, seeing as digital is highly transparent and none of these all-analogue enthusiasts could pass an ABX test.