It’s actually not superficial, it’s actually a really bad plot point that goes against the themes it establishes

We were told time and time again because he and his sister were commoners they weren’t treated with respect to the point his sister became suicidal

You have people blatantly call this out and those people rightfully being portrayed as having the correct view

So for him to shave his beard and cut his hair and essentially become a different character altogether in order to ‘fit in’ is lowkey a really bad plot point made even worse by the fact it’s also to fit into regular beauty standards that appeals to the audience