What about "jews should all be killed because Islam says jews are evil"? How is that different (I mean, besides the obvious) than "murderers should be put to death because the Bible says so"?
I mean, this is a slippery slope. Before Cloudflare took down TDS without any court order, they could argue that they took nothing down. Now they've taken down a site that hosted hateful extremist content along with a lot of other, more acceptable things, and further takedowns will likely be easier still to justify. That's a textbook slippery slope!
But my argument here was that treating political views and religious views differently doesn't make a huge amount of sense to me, since the content of those views can be almost identical.
I disagree with your premise that this is a "slippery slope" and should be avoided.