IPFS isn’t uncensorable. The only thing it changes is that there isn’t a single DNS name which can be revoked or blocked. Otherwise, a government can follow the same process: resolve an IP, get it taken down or block it nationally, repeat.
Blocking them is generally low impact but there is one exception: I believe Cloudflare’s gateway (cloudflare-ipfs.com) uses their regular CDN IP ranges so it’s the same level of difficulty as blocking any content on their service.
To be clear, IPFS is a neat idea. I would just be very hesitant to recommend its use to anyone who has to worry about government restrictions.