Maybe, maybe not.
The question has to be asked, why were they bad decisions? I find in most cases with 'howler' video ref decisions, my issue is with the rulebook/latest monthly referee interpretations of the rulebook. The ball-kicking by Konrad Hurrell, as an example. Correct to the letter of the law but utterly ridiculous in practise.
Or they are legitimate 50/50 calls in which for every person outraged there's someone equally stubborn that it was correct, depending on who they were cheering.
Even if the rulebook was cleaned up (and it needs it badly) there would still be mistakes (Strips, obstructions and forward passes will forever be a grey area in Rugby League), and there would still be the issue of ever-increasing time wastage for diminishing returns. And this is the biggest advantage of the challenge idea.