Increasing locality increases semantic density. As a utility class library, I'd say it's main goals have healthy overlap with other utility class libraries..

A very large percentage of the Tailwind classes also seem to be more or less 1:1 with CSS, or like 1:2.. So it's the locality and brevity IMHO that contributes most to reducing cognitive load.. Or at least in making it faster..

LLMs get along well with high locality..

I'm not sure if I'm disagreeing or agreeing with you now LOL.