Its definitely not all students and, in reality, I believe every generation has been deskilled to diff degrees. So, while these skills are noticeably worse with Gen z than it is with millennials, many young people I meet come to college with some or all of these skills.
So I think you could go with a less extreme intervention lol
I really doubt homeschooling has much to do with it. Some subset of every gen is good with tech.
The one homeschool kid Im working with this semester is terrified to use the telephone. Their entire experience in home school education was largely sitting in virtual classrooms