And it's basically useless as even without cookies they can track enough to link all your information together.
As I tell the kids in my school, when they think that clearing browser history or using a incognito window will protect them from my wrath - all it does is keep the records off YOUR computer. Not anything further upstream.
As Chrome itself says right on the Incognito window:
"Now you can browse privately, and other people who use this device won’t see your activity. However, downloads and bookmarks will be saved. Learn more
Chrome won’t save the following information:
Your browsing history
Cookies and site data
Information entered in forms
Your activity might still be visible to:
***Websites that you visit***
***Your employer or school***
***Your Internet service provider***"
They can tie you into any of your other records without even needing anything more than a vague browser fingerprint, a webpixel image with a particular filename, or any one of myriad identifiers that you're giving out.