That statement jumped out at me too because I suspect that Victor is correct.
It certainly appears that way to me based on what I`ve seen the few lenses I know.
However given the controversy I doubt if such a thread would get very far before heading for the ditch 🙂
I was implying that digital correction and creation of lens characteristics is possible (you can make an old lens look "new", albeit with great effort), but speaking from personal experience, I do think that there may be something to film that makes it more dependent of the lens.
Intuitively, with most digital cameras you get an AA filter that removes the finest patterns. The color filter array reduces detail representation at the pixel-level. And there is white balance, which makes lens "color" not nearly as important as your settings for a specific scene. Even with raw files, you're really getting the interpretation of data by a specific company. When I upgraded ACR for Fuji RAWs, I thought the "look" of the image changed...so that may also be at play.
Anyways I think it's hard to compare digital and film because with digital you get to see an "original" before making any adjustments. With film most of the adjustments occur before you can look at the actual image, in the temperature, chemicals and other procedural details. So maybe people think digital reflects less lens character simply because they get to look at the originals, while with film they bring their own style into the processing.
How could we test this? Take the most "basic" digital camera there is (Monochrom, no CFA, no AA, pixel-to-pixel DNGs), compare it with a relatively "typical" digital body (M type 240, no AA but with CFA and algorithm-determined files), then compare both results to low-grain B&W film. I don't have an MM or M240, but this would be an interesting experiment. I will say this, though - I've looked at A7 files and M240 files (RAW) long and hard, comparing with 4-5 different lenses, using perfectly calibrated, 99% ARGB monitors, and I couldn't see any difference after applying the same WB profile, other than some minor color rendition differences (mostly reds), and the M240 looking
so slightly crisper at 100%.