If you can still search for something on their search bar it isn't actually censorship.
Fair enough but it still seems like an interesting situation.
Surely, youtube's autocomplete options work based on what is happening on the site.
For example, if I begin to search "Marvel U" then it auto completes to many Marvel Ultimate Alliance 3 options since I guess a lot of people are searching for those terms.
In fact, just starting by typing in "Marvel" will autocomplete to a few "Marvel Ultimate Alliance 3" entries mixed in with other Marvel stuff. I assume because many people are searching for that right now.
I think the autocomplete terms will be set by the actual searches being made by the users unless Youtube deliberately steps in to block something.
Someone at Youtube would have to go in and ensure that "Final Fantasy 7 tif" does not autocomplete to anything.