"Now you can browse privately, and other people who use this device won’t see your activity. However, downloads and bookmarks will be saved."

Can you tell me how the original Incognito mode disclaimer was misleading?

Even if it is detectable it shouldn't be detected, why would I want websites to act differently when I'm in private mode?

And if it did block Google's services from capturing the same data as they capture in non-private mode it would act as a sort of ad blocker, why should that be a function of private mode?