Nothing rude about having an opinion about the crap he churns out that masquerades as entertainment, he is a typical luvvie who writes for luvvies.
Notting Hill was an abortion void of creativeness and charm.
You are right, there is nothing rude about having an opinion. However, there is a LOT rude about voicing it in the way she did.
I have many opinions on many things, as pretty much everyone does, but I choose not to blurt most of them out as I understand what's appropriate and what isn't.