Okay, first of all (and I did it too, I'm not trying to be mean) her name is Terri. Second of all, Michael pursued a number of experimental treatments for several years at several different facilities with the hope of seeing Terri improve. He did not "just let it go."
I will admit that I personally haven't watched any of Michael's testimony, but I think the parents have many mixed motives. I also believe they're not respecting their daughter's autonomy and are instead acting out of strong paternalism, which isn't inherently bad, but I don't think they're acting in Terri's best interest.
The money does make me questions Michael's motives, but I think that the courts have dealt with that the best anyone can.
Terri has virtually no chance of improvement (according to two doctors from Michael's side, as well as a court-appointed doctor.) And while improvement is not the only morally good outcome, if we accept Michael's testimony (which I understand you don't, and I think it's correct to question) then I believe she would have wanted to have the feeding tube removed.
The thing I regret is the politicization of the case, as well as the media. That is what is morally revolting.
Why do we play with fire?
Why do we run our fingers through the flame?
Why do we leave our hands on the stove, although we know we're in for some pain?
-tick...tick...BOOM!