> But, if you put it on IPFS, what hosts the wallet, and wallet API?
Which wallet? You can use whatever wallet you want which supports the functionality the DApp requires. There are dozens of wallets, some are in-browser.
While I didn't mention anything about censorship, I suggest reading that entire thread and its continuation. All it discusses is the ability to have curated blocklists. It's up to you whether you want to use them or not.
What I did mention is that you don't have to use any specific replication protocol. Don't like IPFS? Use something else.
If you did want to use IPFS and you're concerned about censorship, then consider that IPFS is a distributed hash table protocol with some default client rules. If you don't use their default bootstrapping nodes, you can create your own IPFS network. In fact, IPFS is totally usable in an isolated local network, or even over a sneaker net.
Also, last I checked, IPFS is not censorship resistant: https://github.com/ipfs/faq/issues/36#issuecomment-140567411