"We have no reason to doubt Amazon" != "It is clearly obvious that their stated motivation is true." It's a claim that there isn't a lot of evidence for the claim that Amazon has bowed to politics in the past, which is not the same as saying that they didn't this time. I do not have enough evidence to judge the claim myself, I'm just observing what you're reading the text as is not what it says.
I would also point out that large service hosts also have a vested interest in resisting government intrusions, because it's bad for Amazon to have a reputation of trashing your service every time some government somewhere burbles something to them. Exactly how "expedient" this is overall is actually a tricky thing to judge and the evidence isn't all one-sided. Again, I don't have enough information to judge.