No. It was a declaratory statement of a belief. The Supreme Court will reverse this if it ever reaches them. I believe that Trump will be assassinated. Does that make me a criminal? No I believe it because many people hate him - for many reasons some better than othes - and some of them in power may feel threatened. If I say that without the I believe, how would that change it? Nothing in the statement is a threat and there also is no evidence of intent to carry out a threat. I think the Appeals Court is severely limited in it's understanding of law. 
They will all die. 
So will all of us. See no threat in case someone wants to report me. ;-)