I've been involved in 2 student project this year: one I thought was good got marked very hard and scraped a pass, actually I blame the supervisor not the student as rarely met the student (Covid you know) and the hard mark was not on output, but on direction. The other one, I thought was excellent and so did the supervisor. I would not have been able to integrate that much open source software into a complex AI system in the time. That student has a £50k job already. I've also hired new grads and been very impressed with them. OK, I've seen barely functioning PhD students, but they are the minority.
So, yes I agree many vocational courses are now degrees and that devalues the traditional degree, but it doesn't make students stupid and there are plenty of very intelligent and very hard working young men and women out there.
As for behaviour - If you were in a student accommodation flat with 12 of you sharing 3 bathrooms and 1 kitchen, how do you think you would manage to isolate? be honest now.