I'd argue the iPad is the bigger offender personally. They're blaming Chromebooks because that's often what schools provided, but the same exact timing existed before with iMacs in classrooms all through the 90s and early 00s for millennials despite Windows being by far the more common real world OS they would need to know in the workplace.
But when it comes to portable devices the iPhone and iPad are king, that's what young people want and often what they're given. And those operate nearly exactly the same as a Chromebook. Toss everything into a cloud bucket, no user-facing folder structures to learn, everything locked down with limited access and customization. A take it or leave it approach to user interaction.