No, it's in favor of it. Ne is doing something different. Si is being traditional. He was actually disfavoring Si in that statement, from a MBTI perspective.
You are right. Si being traditional and unwilling to change, comes close to the characteristics of OCD.
There are many great people with Ne than Einstein himself. For example, Benjamin Franklin, Thomas Edison, Alexander the great, Socrates.
I personally believe that ENTPs are more likely to develop psychological problems such as OCD, which i personally had and treated with Paxil. Ne with OCD is definitely insane because they will do the same thing again again without logically thinking (introverted thinking). But you see, ENTPs have Ti as their second most used function (or sometimes they use is even more of it, when they are isolated themselves). Therefore, they will get rid of their stupid, illogical lifestyle on the run.
I think people with Ne are most likely to get stuck with some psychological problems such as OCD.
Also people with Ne are most likely to be extraverted throughout their life than developing "introverted" functions such as introverted feelings and introverted sensation. I think it depends of their "wealth". For example, born-rich ENTPs are les likely to develop "introverted functions" than born-poor ENTPs. When born-poor- ENTPs are less successful, they will change the way they approach things in order to be successful; therefore they spend time developing "introverted functions", isolating themselves and learning self-development skills.
All of the above ENTPs, I named in the first sentence except ATG, are born-poor ENTPs. Howard Huges (The movie Aviator) could be an example of born-rich ENTPs.
(P.S I've heard Einstein himself had OCD. May be his statement is self-descriptive.)