I would guess that this is Ethan being a narcissist. He has a tendency to say completely different things one next to the other, because they make him look good. And I am certain he believes them.
Also, CG did not started as a political movement. It was YBZ being frustrated he could not buy "good comics" and Marvel executives calling fans nazis.
(Comics, by Perch, who reads us, had a really interesting take on this btw
YBZ is your average white male Gen X working class voter and he even voted for Obama., to the point I gasp if he ever mentions a political stance to the right of center.
But it was Zack screaming SJWs!!! that got him attention and traction and also a lot of SJWs screaming Nazi that turned CG into a rightwing movement.
EVS seems to me more like your run of the mill libertarian Republican supporter, not a hard core Christian or identarian rightwinger like Doug, Edwin or Mike. Hell, even Sweetcast is a more hardcore rightwinger than those two.
I can see Republican Ethan feeling doubts about Trump before election (since Trump took over the party) but changing his mind once he was elected and his team held the reins.
Edit: Drunk3PO explains the Doomcock situation much clearer here:
Every time Doomcock starts a rumor, other channels and publications report on it as truth and he (and I guess other Fandom Rejects) get bombarded with DMs and emails and then they alienate their audience when they report otherwise.
This creates the schism in Fandom Rejects.