> In which way is IPFS immune to content takedowns?
In the way that, if one node is forced to take down some information, that information may still be accessible from other nodes under the same address as before. It's not quite immunity: They can still harrass individuals. Call it "resilience", maybe.
> IPFS provides no anonymity, so it won't take long before DMCA notices to start arriving.
It should compose well with Tor, I'd hope.