How can you act like you know there's 'this one reason you support him'?
Honestly i think your whole slant here is super a$$hole. I've been in the middle of Finals week, so i haven't had time to solve the entire riddle of the 2016 campaign. Does that mean i should be talked down at? Apparently so.
Frankly, I've tried to do the exact opposite: when I say a Trump supporter must be used to the idea of not knowing what he'll make them defend next, that implies that I think you're actually a good person who doesn't like what he says and doesn't really want to defend most of it, even if you think he's worth supporting in spite of it. It'd be a lot worse if I assumed you actually agreed with every horrible thing he's said or done. But since you pointedly refuse to defend most of it, even when directly asked, I don't think you do.
Trump does fund his own campaign WAY more than the other candidates. Link.
And yes, that is important to me. It's not the only part that's important though, even if you want to make it sound that way.
But whether this is the only reason, or the biggest reason, the question is still: is your support contingent on it? Would you not support him if (when?) he engages in traditional fundraising? And if not, what would he have to do to lose your support?
I'm not asking these questions to be snarky, but to make an actual point. Support for Trump seems to be based in a belief in the man that simply isn't supported by his public record. So I want to establish whether or not this support is unconditional. If it is, then there's no point in arguing. If it isn't, then let's lay down some markers in advance, for the next time he goes back on something he's said.