Illinois is one of the most administratively fucked up and corrupt states in the country. Four of the last ten governors have been so bad they actually served prison time and the current governor appears to be cut from the same cloth.
Illinois has a history of corruption for sure, but illinoispolicy.org is right-wing propaganda. Also, it’s corrupt and bureaucratic for a purple state but it’s still much better than the median red state (my native Iowa went from purple to solid red a decade ago, and we nosedived on everything from education to economy to deficit spending to public health to corruption).