echoSMILE: I think you may be confused about how IPFS works. IPFS does not just arbitrarily download content from the network it does it because you asked it to.

The two biggest reasons I've heard easier self-censorship come up are:
1) (the biggest) people who run gateways are effectively allowing other people to instruct their nodes what content to download as a nice service to the network. It's a free service that bridges HTTP and IPFS. For a while people have been just using NGINX proxies to block any content they don't feel like providing and that's been fine, but there's an interest in making this easier, more portable, and more featureful (e.g. so I can choose to add the list of content your gateway blocks to a list of content mine blocks).
2) People who want to more liberally download content that they're not confident they actually want. These are the types of folks who are generally reliant on anti-viruses scanning similar types of content they download using web browsers + HTTP. They're hoping these lists of bad content can act like fingerprints in their AV software.