My point is that incognito does nothing to hide your identity, and therefore "incognito" is a misleading name for the feature.
Note that a court is not interested in my understanding of how Google's products work. They are concerned about a layperson's understanding.
Of course, the technologies that much of the internet uses have a lot of inherent privacy implications. The question is whether Google should communicate these accurately to people who do not understand them.
In fact, Google does explain that IP addresses are transmitted when using Incognito on this help page: https://support.google.com/chrome/answer/7440301
I'm no expert, but it seems unlikely to me that "The TCP/IP header argument...shows how internet is full of people who will keep arguing for the sake of argument instead of trying to have a reasonable, pragmatic and honest discussion." That just seems like an off-topic rant added on there, bad-mouthing others while positioning yourself as one of the noble internet good guys. "Assume good faith".