I’m not speaking from a place of facts, but I think the sentiment is if you don’t purposefully vote for someone within the two-party system that isn’t Trump, your vote will mathematically be a negative towards votes against Trump.
Not voting/third-party vote = one less vote against Trump/more possible votes for Trump
This is a dude who thinks he can get a national broadcast network taken off the air for simply asking the FCC. Someone in his campaign is going to say something that questions the validity of this doctor and call for petitions to get their medical license revoked. I appreciate they are making an effort to appeal to the uncommitted voter, but sadly Trump is surrounded by people who understand what will make his base angry.