“Always”? Nope.

“If you’re concerned, for whatever reason, you do not wish to be tracked by federal and state authorities, my strong recommendation is to use [Google Chrome’s] incognito mode.”

• Eric Schmidt, 2014

Source: https://www.forbes.com/sites/thomasbrewster/2015/01/05/super-cookies-can-track-you-over-google-incognito/