I can bitch about chrome all day long... but none of that bitching will be about incognito mode as that was and continues to be an useful feature that did exactly what I expected it to do. Everything it said it did, it did.
Just because people made up their own imaginary ideas about what they think it does isn't really Google's fault. If people think snorkels allow them to scuba dive and then drown, I'm not about to blame the snorkel maker that wrote 'diving googles and snorkel' on the packaging.
So do you feel the naming was inherently misleading which led you astray? Because incognito mode absolutely kept things 'sneaky' in terms of hiding the things I look up from other people who use the same computer. Which is specifically what Google said it would do and showed examples of in TV commercials. And it definitely did (and still does) that.
I'm also struggling to understand what you feel you 'trusted' Google on exactly. What did they tell you that you believed but, as it turns out, was not true?