User blog comment:ElyaqimNYC/Not in the public domain in countries and areas where the copyright term is the author’s life plus seventy years/@comment-6417519-20160707214611/@comment-6417519-20160707221217

We're not an academic institution and that seems really odd that they would use that rather than simply using what actually determines something to be in the public domain (like whatever their country's years factor is). I can't think of a single example of a character on here where it's status in its country of origin would trump it's status in whatever country the person wanting to use the character is in. By adding these disclaimers to all of them, it does seems like you'd be causing more harm than good 'cause someone would see it and assume it's important and then shy away from using the character.

My advice would be to wait at least a couple weeks and see what others have to say before making a big change like this. 24 hours isn't enough time for enough people to chime in with their thoughts.