He is one of those frequently quoted, rarely read, often misunderstood - and this association is unfortunate, unfair, and not accidental.
The end result is that most people have no idea what Nietzsche thought and believed, but he gets held up as an example of something he spent his life fighting.
His chapter on Nietzsche was also just disastrous, while reading this, I had wondered whether he even knew who Nietzsche was.
So it's not just one time thing.
I remember reading that chapter - though I wish I had forgotten it. It made me look at Russell in a negative way.
Ironic.
I just can't help but share this meme from 4chan about Nietzche here.