I think what people are really gravitating to with "utility CSS" when they say they finally "get it" or it say "feels like REPL" is the fact that you can get in

I think what people are really gravitating to with "utility CSS" when they say they finally "get it" or it say "feels like REPL" is the fact that you can get instant feedback in the browser using the inspector. It's a bit like when you first "get" TDD. Which in my experience happens soon after you've got your spec listeners and live reload hooked up properly and manage to get the spec runner to react in less than 300ms. A whole new world of possibilities open up. I'm not taking sides, but just want to point out that this quick feedback loop _might_ be clouding people's judgement as to the benefits and drawbacks of using a coding style such as this.