Being flagged by this technology means you're accused of wrongdoing.
"Where there's smoke, there's fire": false accusations have a proven history of harm, especially with crimes people feel strongly about, like rape, child abuse, fraud/lying/cheating, etc. More so with our current social media culture, where exonerating evidence usually doesn't get spread around sufficiently.
This is (one of) the reason(s) libel and slander are also crimes.
And then there is the problem with proof & defense in such investigations. After all:
* How many students have the knowledge to challenge these new technologies?
* How strong is the "proof"? The software in the article mentions processes in the browser generating (i.e. faking) data...
* Is such evidence pollution detected? Does "innocent until proven guilty" also apply here? Or do we assign the responsibility to the student, and thus assume guilt until proven innocent?
* How well are students that are found innocent exonerated? Having dismissed charges on record can break careers, as it's seen as a risk...