> i don't think that fits conventional usage of the term
Then I think it's on you to provide an alternative definition to the one in the dictionary:
https://www.merriam-webster.com/dictionary/censorship
I'm very curious as to what you think the word means.
Which of these definitions do you think supports your case?
The most relevant Merriam Webster definition, which is actually under "censor (verb)", I reproduce here:
> to examine in order to suppress (see suppress sense 2) or delete anything considered objectionable
Piracy is not typically considered bad due to being "objectionable", it is considered bad because many people/societies consider it equivalent to theft. You can obviously stretch the definition of objectionable to mean that, but it is on you to demonstrate that is a reasonable stretch. Blocking out sex scenes from a movie and removing pirated materials are obviously different actions, and this definition clearly refers to the former.