>>104989309In a world literally built on super technology and inhabited by magical beings of divine origin, like Glimmer and her mom, and actual mutants, like Scorpia, Entraptas prehensile hair and her body's ability to cope with the strain is honestly tame in comparison
There's more to Entrapa than just prehensile hair. Either it's magic hair, in which case normal physics don't apply to it or she's a mutant in which case her physiology has altered to accommodate the strain caused by her hair. Or she just used SCIENCE to re-enforce her neck with cybernetics.