Well, i think you guys have some misunderstanding here.
Skinhead is used to describe the hair cut in the photo i have
above. That's what a proper British skinhead culture era's skinhead
haircut would look like, i.e. the standard definition of
skinhead.
Crewcut is very similar to skinhead, but longer, and often the
sideburns are not emphasized.
Whereas, completely no hair, would be well, not even a haircut at
all in the most technical sense.
So yea, a case of misused term here.