So, it was up to her because everyone was responsible for the system as a whole. That includes her. She is clearly in the wrong here.
What "experiment" did she think she was running? I see no experiment here. All she did was not address the issue until someone higher up complained. That's it.
She made zero effort to find out why this happened, who did it, etc. She assumes her coworkers are wrong and bad and lazy. Maybe they were busy doing other things and didn't notice this issue. If you are more competent than your coworkers and not getting paid extra or whatever, that can be aggravating. But management doesn't care about your petty BS. They care that the system runs properly, not which individual routinely has to catch and correct the anomaly while pouting about doing their job.
She even indicates it was incredibly trivial to resolve. So this post sounds like someone looking for BS reasons to be wrapped around the axle about something.
"Once, at work, I spent vastly more time conspiratorially complaining to my boss and then faux monitoring the system than it would have taken to just fix the problem that it was my job to fix because I had delusions of grandeur and wanted to indulge in some completely pointless witch hunt."
Wow, honey, get new hobbies. Fucking with coworkers for giggles and then blogging about it does nobody any good at all.