I agree with you in many cases, but note that different institutions, in different countries, teach differently, and grade differently. While cheating in a core class that builds important knowledge in your major seems like a horrible idea, that's not all there is. For instance, anyone studying computer science in my state school in Spain, a few decades ago, had to take a deadly physics class in their first year. It contained, easily, the material of three physics classes in a sensible American university. There's no such thing as TAs, and time with the instructor outside of class is just not a thing. The pass rate was under 20%, and that's on purpose: failing people was part of the objective, as it served as a way to keep people enrolled, but unable to access later classes, which don't really need any advanced physics. This kind of cribbing was (and it might still be?) popular in that state university. The goal for the students is not to get the best grades: It's just to pass at all, so that they can get on to the classes that might teach something they are interested on.
In an American university, I've seen people being quite motivated to cheat because their financial aid was depending on a GPA. Nobody might have cared about the GPA later, but when you have thousands of dollars a year on the line, and your first midterm didn't look good...
So sure, most people in an American university, in most circumstances, shouldn't even be considering cheating as an option. But systems and circumstances can be different for others. The fact that this students were using Whatsapp already tells you that maybe their circumstances were different, and they really might be in circumstances where the incentives to cheat are strong.
In an American university, I've seen people being quite motivated to cheat because their financial aid was depending on a GPA. Nobody might have cared about the GPA later, but when you have thousands of dollars a year on the line, and your first midterm didn't look good...
So sure, most people in an American university, in most circumstances, shouldn't even be considering cheating as an option. But systems and circumstances can be different for others. The fact that this students were using Whatsapp already tells you that maybe their circumstances were different, and they really might be in circumstances where the incentives to cheat are strong.