Hello, I read the FAQ and didn't manage to find (perhaps my fault) if users had to store data they didn't explicitly/manually cloned; like Freenet. Is it the case?

AD: You have control over what you seed, if you are a permissive node you accept all content on the network, but by default your local node will only seed what you instruct it too.

No. Please refer to https://radicle.xyz/guides/user and read this to understand the concept of "policies". This should answer your question, but otherwise of course I am happy to explain further.