For a man sure, you can do your hair in 2 minutes. But if you’re a woman it is going to be a multiple of 15 minutes.
I've had short hair and right now I have long hair. Long hair is a bitch between washing and drying.
Many do though.
I have a family member, also male with short hair, who used to take 20-30 minute showers every day, driving others in the house insane - but that was the "I'm a first-year medical student, I just learned how many bugs there are on everything, and how ugly diseases they cause; also, have you heard of SARS?" effect. Other symptoms include going though copious amounts of hand disinfectant. Fortunately that went away over time, as they improved their feeling for actual risks.
I think the greater point is that hair maintenance varies greatly from person to person, and it is absurd to assume every male only needs 2 minutes or every female needs > 15 minutes. A great example of the stupidity of stereotype and how it leads us away from useful thought.
(The dirty little rugrats don't give a damn, but they know).