Jonathan Blow works with extremely small team sizes relative to the big studios. When you only have a couple people working on a project you don’t need all of the same coordination features.
He's also the sort of person who I suspect works in a very idiosyncratic way, which is great for him and his mind but probably not everyone else. (This is not a criticism.)
He and Casey Muratory make a lot of cool instructive content, but their condescending attitude towards the industry always made me thing "Huh, must be really nice working alone and making all the decisions yourself."