Two of the three actions I suggested saved 102 people (assuming that you aren't one of the 100 innocent people). Two of them are possible in the least convenient universe. Two of them are moral. Those three tradeoffs are the only ones I considered- or do you consider kicking a child in the face to be a moral act?

There is no benefit to committing to not give into blackmail in this case, except that it might reduce the chances of the scenario happening. One of the advantages to noncompliance is that it reduces the chance of the scenario recurring- can you be blackmailed into kicking any number of children with the same 100 hostages?

I'm observing that most of them considers themselves an immoral hypocrite.

No, they don't.

I like my kidney. I value my kidney more than I value someone else having my kidney unless they are a relative or close friend. I have impolite words to say to anyone who dares suggest that me keeping my kidney is immoral.

The fact that the conclusions which are necessarily drawn from the premises of consequentialism are absurd is what discredits consequentialism as the primary driver of moral decisions.

You don't understand consequentialism. The straw man you criticism more closely resembles some form of utilitarianism---which I do reject as abhorrent.

I'm observing that most of them considers themselves an immoral hypocrite. Exceptions apply to people medically unsuitable for kidney donation.

Personally, I would be suspicious of any ethical system in which perfection was so easy that a nontrivial fraction of adherents were perfect.

There recently was a post on LW (to which I'll provide a link as soon as I get behind a 'proper' computer rather than a smartphone) making the point that the expected number of lives you save is much higher if you donate $400 than if you donate a kidney, so if you're indifferent between losing $400 and losing a kidney (and given what that post said about the inconvenience of the surgery for kidney explantation, I'd say $400 is even a conservative estimate) you'd better donate the former. (FWIW, I have agreed to donate my organs after death -- more precisely, it's opt-out in my country, but I know how to opt out and haven't done so.)