maybe it is some sort of status thing. since people have to be able to afford a fancy keyboard with a shift key to use camel case or underscores, it shows they can afford nicer things than us kebab-cases.

more seriously, it is the unfortunate fact that a lot of systems interpret named-thing and named minus thing. many people don't have the option of using kebab-case. it isn't a good style because it is often impossible to use. which is unfortunate because it is more ergonomic.