I think the author correctly identified a large issue:
A feeling of impunity undermines citizens' trust in justice, politics and "the system". The cost of that is almost impossible to calculate.
Belgium has had this problem within justice for a long long time now: whenever a "crime" is profitable to the government, such as speeding, the whole process from gathering evidence to inning the fine is fast, digitised and automated.
Whenever real victims are involved, it's amateur hour, fumbling about, having to manually go from griffie to station.
"Slachtofferhulp" is a joke, just one old lady that doesn't care calling you up: "oh yeah dude got released 4 months ago forgot to notify you sorry haha".
The justice system to many is a career, a self-fullfilling goal, where the everyday realities of victims and perpetrators are treated as nuisances that disrupt internal routines.