Objectively yes. Information on correctly peeling a pineapple is ok? Processing chicken to cook it? What about a dog? A rat? Fish? Insects? Is killing millions of bacteria with a single drop of chemical okay? Ways to commit suicide? What if this video is for prevention?
When it comes to moderation, we can't even set a consistent rule set to "deal with it all (c)". We just wing it, and hope it matches the expectations of our majority of our users... and the government(s)! Yeah governments have rules, but they tend to change towards the expectations, and a lot of rules for interpretation. It's a very hard task.
> For that matter, can knowledge exist without bias?
Umm... I don't know what that would mean. Isn't science there to reduce the amount of bias in knowledge? So, maybe, no? We can hope to reduce it, but we cannot get rid of it? At this point I don't really know what I'm talking about to be honest :)
Hmm. Do you mean to imply an external Dorian Gray effect may happen: https://en.m.wikipedia.org/wiki/The_Picture_of_Dorian_Gray? Wonder if there would be any other biological intra-cellular or inter-cellular Dorian Gray effects that may happen? Or, if this may really be a new free lunch.