You have a right to be excited for Lana's new project. And people have a right to tell you to tone it down because it's a bit part and she only has a few lines and people also have a right to wonder why she even took this role in the first place, considering how insignificant it is. But be excited all you want, no one's stopping you.
Actually, you don’t have that right.
You have overstepped yourself and you know that because you chose to do so on anon. If you thought you were doing a socially acceptable thing you would sign your name to this message because there would be no social cost to doing so.