I could be incorrect, but my understanding is that the DHT used to route through IPFS is not robust to attack. A bunch of nodes could join the DHT and start mal

I could be incorrect, but my understanding is that the DHT used to route through IPFS is not robust to attack. A bunch of nodes could join the DHT and start maliciously routing data in circles, and that would be a very low cost way to significantly disrupt data availability and uptime on IPFS. A few papers exist that describe byzantine fault tolerant DHTs, but they make assumptions about the percentage of evil nodes, which requires some method of authentication / Sybil resistance to be effective. Also the network cost blows up substantially, and DHTs already aren't very fast in terms of loading things like web pages.