In his newest summary paper, Nicolai favors a particle "desert", favors the idea of no physics beyond the standard model, favors asymptotic safety, and favors a discrete structure of space-time. Is he a secret fan of the spaghetti model, which is one of the few models making the same claims? No.
Nicolai makes a bizarre move. Even though he shows in his paper that there is no experimental evidence for supersymmetry and string theory, in his conclusion he calls them the "leading contenders".
In politics we describe people doing the opposite of what all arguments and facts imply with a simple epithet: we call them "corrupt". Nicolai is a typical modern theoretical researcher: he bows to money and power, not to truth. As long as he keeps this attitude, Nicolai will not achieve anything in his research.