I suppose it could be done - I see excellent work made with M cameras and very fast lenses, some that are probably even harder to focus than the Noct. Maybe I'm just not a very good rangefinder user - I don't own any Leica RFs, and only occasionally shoot with a Bessa. But more light is always good; less noise, more processing latitude, and with EVFs the refresh rate doesn't tank so easily.
It absolutely can be done, and has been done for decades with rangefinder bodies. Having been "raised" using them, they're quite natural to me, and I find whatever shortcomings others may think they have not to be limiting at all. EVFs are the devil's spawn. I dislike them for a number of reasons. Large aperture lenses were introduced for low-light shooting... shallow DOF and "bokeh" were part of the deal. Shallow DOF was talked about, not in terms of selective focus to draw attention, but in terms of focusing accuracy and what you needed to be in focus and how to shoot to line up your shot so that the important parts ARE in focus.
The discussion of bokeh and "selective focus" as pictorial elements are a fairly recent phenomenon. I don't recall ever hearing them before the Internet age. They may have been discussed, but not in the circles in which I traveled. They
were noticed, of course, and selective focus was used, mostly of necessity.
One of the things I've found interesting about the Internet age is the incredible air time given to minutia. In the '70s, the two biggies were in-body metering accuracy and multi-coating of lenses to help prevent flare and internal reflection. Those were huge advancements. There might be a comment here and there about one lens having a tendency to be "softer" than another, but many pros used Softar filters for portraits anyway then, and soft, portrait-specific lenses like the Thambar were produced dating back to the 1930s. I was taught that when photographing a woman over 30 to use a #1 soft filter, and for a woman over 40 to use a #2. I still subscribe to that philosophy. (but then I still shoot film too.
😉 ) "Sharpness" isn't everything. There were, of course, comparisons of lenses using test patterns for resolution that was part and parcel of the early advertising pieces, but it's only been since the growth of the Internet that people seem
preoccupied with lenses in terms of sharpness, charts and graphs.
What I find interesting today is that discussions of cost, sharpness, and the meaing of charts and graphs seem to have equal, if not greater importance to consumers than the images they make. Sorry, but I don't "get" it.
If you can make use of an F/1 lens, and you can find one you can afford (how ever much that is) that's great... and go make
images with it. Unless you're a collector, Images are, after all, what photography is all about, not test charts and lab comparisons. There's not enough difference among the fast glass out there that
anyone can look at an image and tell me what lens it was made with. Even the old Canon f/0.95, as soft as it could be, makes some pretty amazing images, and the charts and graphs be d*mned.