This one is easy to answer with two words: Selective Editing.
You can make anyone seem to believe almost anything if you simply selectively edit their words. That's what happened here.
If you watch the full video, instead of the 50-second clip, you will see that Evan openly talks about stopping both Trump and Clinton. This is consistent with the hundreds of other interviews he has given.
The full interview is here: https://www.youtube.com/watch?v=2TKAwrKwgzY&feature=youtu.be
And you can see another interview that supports this one here: https://www.youtube.com/watch?v=Fv0MXhgLgXQ&app=desktop