It’s a real post, so Filipowski is not lying or spewing disinformation here.
Beyond that, it doesn’t matter whether Trump types out the words himself, whether he dictates it to somebody, or whether somebody posts it on his behalf without his even knowing it. As long as it comes out under his name, they are his words and his ideas. He is responsible for the post. He owns it, lock stock.
I will say this, though: if anyone can get away with the idea that someone who works for him did a rogue post and the named person on the account didn’t know about it and shouldn’t be held responsible for it, it’s Trump.