He's spitting in the wind? It doesn't require superhuman courage to post a diatribe against Republicans in this forum. Quite the opposite, I imagine it takes quite a bit more intestinal fortitude to brave the insults of the AT P&N left-wing hivemind and disagree with this forum's dogma.
Actually, it's above the political level, even though it's "political."
It's more about concentrated industries, majority stockholders who sit on the boards, their beliefs, and the venue in which they choose to promote them.
If you thought you had a couple billion or a trillion in your self-interest, principle doesn't matter if you can find discontents among the 98% who feed on principle. You might be willing to kill for those kinds of stakes, and people have probably done so.
Think of John Huston's role as Noah Cross in "Chinatown:"
"Mr. Gittis? In my life, I've learned that most people, at some time in their lives, are capable of almost anything."
An interesting fictional twist to the factual book "Cadillac Desert."
ADDENDUM:
To put all this on an even keel, suppose we talk about "character?"
Here's someone whom I didn't much appreciate as a little shaver or during the first part of my adulthood:
To paraphrase another script-line from a Steve McQueen western -- "Tom Horne" -- speaking about a comparison between John L. Sullivan and Geronimo: Eisenhower was so great, that Nixon, Ford, Reagan and the Bushes would all have to stand on my shoulders just to kiss his a**. And Trump, Christy, Huckabee, Cruz, Rubio, Fiorina and the rest? Think about the sorry bunch of candidates today. They couldn't much manage to get their circus act together for such a feat.
500,000 dead soldiers on your mind for the remainder of your life. What a lot of weight there.