Old guy here. Notice how highlighters dont have a pointed tip, but rather a slanted rectange. Black markers used to be like that. If you wanted a smaller line you had to angle it and use one of the corners.
Then sharpies came along with the pointed tip and everbody bought those instead. I cant remember seeing the old type any time recently, but I expect the crafts section would still have them.
I suppose their name could also be meant to imply that they're meant for sharp people, to write down ideas with.
However, in all my time in meetings I would say they're rather meant to write ideas on flipcharts with that'll lead to a sharp decline in business value. 😑