I'm not sure I'd use the word "guilty" - that suggests some wrong doing.

However I agree with your premise - trying to remove abstaining voters from the math is incorrect. Abstainers are explicitly making their view known.

That view is "I don't care, but are equally good or bad". (Which in turn demonstrates a profound ignorance of what's going on - and frankly folk that unconcerned should probably not pick a side.)

I believe it's fair to say "America voted for this". America is a democracy and the voters spoke. Of course it's not unanimous but majority rules.

And it's not like his campaign was disingenuous. The man was on display, and most of the things he's done were signaled clearly in the campaign. (He's long been against foreign wars, so the Iran debacle seems out of character, but then again it's in line with his dictator instincts, and he desperately needs a distraction from the Epstein files.)