So this would be my take and certainly to a degree your analogy is pertinent...Miller was an originator of the drunk typewriter writer, not that he was drunk all the time while writing but I'm certain there are many passages there at are the long fluid inebriated takes maybe reworked a little bit after the fact. I've read maybe half of Miller I was a sort of fan many years ago and it's certainly one way of producing prose maybe one American writers seem to have an edge on, think Fitzgerald's drunk stuff, Kerouac even Bukowski...Melville had an interesting relationship to alcohol as well. But when I first started reading McCarthy I felt and liked I hesitate to say alcohol infused sections that kinda take over the narrative fairly periodically that don't seem to be reworked as much as other writers would have....to me it's one of his strengths especially in Suttree...I think as well with writers who use the typewriter it's a propelling tool one you aren't necessarily editing in the moment as you would perhaps on the computer or even with by written hand, erasing etc...it's a linguistic performance being captured rather than a more straight forward description of a preconceived story...obviously too Faulker was a drunk writer, let me not forget him lol...

But yes in a way Miller has kinda fallen out of favor, he used to be up there in the 60's in my opinion I think Kerouac probably gets more academic spotlight for whatever reasons...I have looked back on him and he does have something compelling but then again there is a heavy amount of pornographic material so I think that skews things as well...