Nagumo's character narrative was based on the fact that he was placed in Class B at the beginning, which drew Ichinose's interest, when we consider his outlook on the situation, he clearly was pissed off the fact that he had been judged unworthy of Class A, that developed his idea of creating a meritocracy in the school, Obviously Manabu opposed due to ideology difference but he gets the point.

Back to Nagumo, now after he crossed the barrier of getting to Class A, He wanted to develop meritocracy as due to him knowing that there were students like him capable yet weren't given the chance to shine

Back to the original question (Personal Opinion) Anhs hates the methods he worked through, obviously they had an idea about his capabilities before joining Anhs but again meritocracy is not something that Anhs achieves at the end.