You claimed something was there, the burden is on you. The allegation is Google, through a combination of data collected from you Incognito browsing session and non-incognito data collected from other Google apps that happen to be running on the same device could be enough to deanonymize you. There is nothing at all alleging they use Chrome. Even the most egregious X-Client-Data header is called out as specifically as not sent in Incognito.