What Wallace says rings true in a lot of ways, but the example of what it takes (asking Trump to concede) is his own delusional desires, not cowardice. Trump should stand and fight the corrupt system and we should support him as he does it. But when Trump resorts to mocking good (often conservative) people as he has done time and time again, I personally have not problem calling him (Trump) on it. Trump is a jerk, a class A jerk in the line of some democrats (IMHO). Due him being a jerk, he perhaps made it harder on himself when his time of need came around.
TLDR: Character matters... and true friends stick with you when you are a true friend back to them.