This is true.He made comments like ''Marx's sentence was too clever to have been written by a German'',or ''german mind is deep in beer''.
He....one must wonder why then he admired Schopenhauer, was friend of Wagner and served in the Franco-Prussian war then etc...I doubt he could have become what he was outside of german schools, german universities, Germany, as he was soaked in german culture, a child of it!
These a bit bitter quotes might have stemmed from some disappointment with his brethren because of that:
In 1883 he tried and failed to obtain a lecturing post at the University of Leipzig. It was made clear to him that, in view of the attitude towards Christianity and the concept of God expressed in Zarathustra, he had become in effect unemployable at any German University.