Is saying "Not everyone can succeed" also racist?
Yes. Anything a white person says is racist in academe because the Newspeak word "racist" can, when needed, mean "white person". (It can also mean the same thing as the English word "racist", or be equivalent to the English phrase "critic of a leftwing program deemed by the left to be beneficial to racial minorities", as needed, and, like all Newspeak words and phrases can change meaning after it's been uttered or written as necessary to promote the expansion of state power under the control of leftists.)