First, sentences like "Not because it’s complicated. Just because I have no idea what I’m looking at." and "Tiny interruption. Still annoying every time." fatigue me, it's like you have an editor who, no matter what the content is, tries to spice up your writing with lots of little punchy exclamations, not everything needs such emphasis

Second, this may differ a bit from language to language, but maybe those booleans should not be a boolean: https://gleam.run/documentation/conventions-patterns-and-ant... for example isAdmin boolean could instead be a UserRole custom type, with variants Normal and Admin, which is easier to understand in the function call, and extendable with another Moderator (or whatever) variant

Exactly my thought. I know languages differ in support ... but enum is right there.