I trimmed my sons wild hair over the ears only. Other than that it hasn't been touched. If you want to go for it!
I saw that but he has cute curly hair so I'm not cutting it really until it gets wild. I see no problem with shaping it so it looks cute. My friend let her little girl go around with a mullet because she was afraid to cut her hair. I say cut it if it will shape it up so it can grow out cuter. otherwise let it be.