.”Likewise hashem’s army doesn’t need to be dressed like a bunch of penguins if they are able to shteig more effectively wearing a different colored shirt.”
100% true. You’re welcome to shteig wearing whatever color shirt you want to and no one will stop you. You’re also welcome to learn in whatever Yeshiva you want to. You’re also welcome to open your own institution with whatever rules you want. What you are not allowed to do is insist on being accepted in someone else’s institution while deliberately refusing to follow its rules, whatever they may be.
Just like you can’t send a girl to a school without wearing the school’s uniform, you can’t send a boy to a school without wearing the school’s uniform.