Two completely different issues. One has to do with "speech" and one has to do with "technical" operation of the aircraft to avoid any disruption in communications that may jeopardized the safety of the aircraft. If you don't know the difference between the two issues, then our country is in much worse shape than I even want to imagine, because thinking like yours is going to embolden the government into encroaching on our freedoms even more.
So, you think that the tweet “I’m going to destroy America,” isn’t a red flag?
Why do I think if that brat had committed an evil act on American soil (or within the aircraft), you’d be the first to complain?
And no need to get personal.