It is just the truth not arrogance.
Islamism, like any other totalitarian ideology, has been a disaster for scholarship. The left-wing totalitarianism in the American academy seems to have been even more destructive than Nazism because it has been in force longer, and the majority of the faculty are adherents. At least in Nazi Germany most scholars despised the Nazis, and were embedded in a tradition of classical European liberalism, although reactionary anti-nazism hasn’t been altogether healthy.
/bingo