Praise be to Allah.
I am sure that what is said here is an exaggeration, but qaadis are not infallible. Like other people, they may be right – which is what usually happens – or they may be wrong, but the mistake of the mujtahid is forgiven in sha Allaah. If any mistake is made, then the person who notices this mistake has to advise the one who made it and consult with scholars and people of virtue who can also advise the qaadi. It is not permitted under any circumstances, even if mistakes are being made, to call for the implementation of man-made law. Allaah says (interpretation of the meanings):
“But no, by your Lord, they can have no Faith, until they make you (O Muhammad) judge in all disputes between them, and find in themselves no resistance against your decisions, and accept (them) with full submission”
“And whosoever does not judge by what Allaah has revealed, such are the Kaafiroon (i.e. disbelievers)… such are the Zaalimoon (polytheists and wrongdoers)… (then) such (people) are the Faasiqoon [the rebellious i.e. disobedient] to Allaah”[al-Maa'idah 5:44, 45, 47]
Ruling by anything other than that which Allaah has revealed is one of the greatest evil actions which the Muslims must deal with immediately, so how could we ask for it to be implemented? Qaadis have to fear Allaah with regard to their judgements, and ensure that they are in accordance with the sharee’ah of Allaah. Punishments are the means of treating the problems of society. Qaadis and others who do less than their official hours of work have to fear Allaah with regard to that and be keen to avoid shortcomings and be sure that their earnings are halaal, because they are hired employees, and it is not permissible to have any shortcomings in any of the things that Allaah has enjoined upon them.