Perhaps they don’t mean anything for a lot of people, but ambiguous terms mean nothing precise to anyone at all, so how useful are they really? At least a term one doesn’t know they can look up and learn, rather than be perpetually misled by ambiguous terms.

If anything 2K and 4K and 1440p are the more marketing terms because their ambiguity allows companies to apply them to products in a misleading way to market their product as something better than it is.