No...it doesn't point to a *deterioration in people's faith in institutions" like the article surmises.
It points to the fact that Right Wingers especially are so enshrined in the cult of Maple Maga that they've adopted the "Anything I don't agree with is rigged." Saying that it's about "faith in institutions" is disingenuous because they know damn well there was no rigging, but they learned from Trump that if you cry loud enough, people believe you.