I'll let the AC explain what he thinks is wrong, if he will actually step up to the plate.
But, you do realize that this story starts with Timothy mentioning what a small percentage of the OS community thinks, and doesn't mention a somewhat more likely possibility - that Google is dissatisfied with the GTK, finds it very difficult to work within its limits, and doesn't feel it can get any cooperation from the GTK designers. If that is how Google feels, then the AC would probably say Google's position is reasonable. I tend to agree with that, myself. But, what's the point of asking the AC to defend his position, when that same position was totally left out of Timothy's original summary, and the position of those who don't see any problems with the GTK is presented as the default of the whole open source community?
Summary: Ooooohhhh! Anybody who doesn't like FOO is a rapist of dead baby seals and unmutual to boot! We're gonna just assume that absolutely everybody reasonable likes FOO, and raise only the questions those reasonable people would ask mean old unreasonable Google.
AC: Well I don't like FOO because it's smelly and might let girls into the Sekret club...
You: AC, you need to explain mo' betterer
Yes, AC probably should present some specific facts, if this was a debate over GTK's quality. But even if you turn this whole thread into a debate with the AC and others like him, win every point, and leave the rest of us impressed with your clarity and logical superiority, do you really think that will prove Google's reasons are as invalid as your debate opponent's?. The facts are, there is an ongoing debate o in the OS community over the conduct of the GTK developers. The summary needs to be written like the community is still seriously divided, not like the only questions being asked are from people who don't see a problem with the GTK and assume that Googgle can't really have a good reason.