It really sounds like you might not know what irrelevant means.

Saying she's irrelevant implies nothing she does matters because it won't have an effect on anyone. At the best, she shifts the Overton window, at worst she finds a way to get legislation through that strips the rights of millions of Americans.

To say she's irrelevant means that everyone should be able to ignore her indefinitely with no consequences, and we're saying that's simply not the case.