[@Raddum]
I think you mean "sometimes newbies just make bigger ones".
As for MM Deku looks, I figure that they could afford the time and energy to do their 'hair' up in more elaborate styles.  It could be a geographical aspect (Terminan Swamp vs Hyrulian Forest) but it could also be that we see outcasts and assholes more than any normal member of Deku society.
Also see Lake Zora (Ocarina of Time) vs River Zora (any aggressive Zora that shoots lasers from the water).