As a professional photographer, I'll say that a lot of these are just overhashed and oversimplified arguments that most photographers don't consider or even think about, with the possible exception that high ISO causes noise.
Having had to push 400 ISO film to 3200 during development, I'm super impressed by how little noise modern sensors produce. Sure, colour noise looks awful but it's also really easy to remove because humans are not really sensitive to high-frequency components of chroma anyway.
High ISO even for relatively small sensors is an often overlooked benefit from digital photography. I got a lot of pleasure out of my many hours in a darkroom but I wouldn't go back.
But they shouldn’t be seen as dogma. (Well, unless you do it on purpose: https://en.m.wikipedia.org/wiki/Dogme_95 )