Easier to look the part with long hair...

There are a lot of balding rock stars holding onto their long hair. And fans incessantly troll them.

Looks matter.

Joe Bonamassa quit social media after a blowup over his looks. https://www.ultimate-guitar.com/news/general_music_news/joe_bonamassa_announces_hes_quitting_social_media_after_comments_aimed_at_his_looks.html