My experience has been that the students, overall, are far poorer than they were.
You would think with the ease of finding materials and supports, their writing would be stellar and they would have read so much more than earlier generations of students.
When in fact many cannot write, and they don't read much either. Professors I know are finding they need to read things in class if they want to be sure the kids have read them. Most will not read the books assigned for the class, much less others mentioned tangentially. Which used to be normal, if something was mentioned the better students would go find it and read it as well as the required texts.
This was going on before AI summaries were available so I can only imagine it is much worse now. They won't sit through long lectures either. They say this is because it's "bad teaching" but the reality is they cam't pay attention and follow the thread of a talk that is an hour long, much less two or three. Not can they take their own notes.
I don't think the students are inherently less intelligent, but they certainly seem to have significantly devolved in terms of their intellectual development.
So much worse students, but higher marks. It will come back to bite people though. I have family members teaching in several areas, one who is a law professor, and one who teaches electricians, both say the same thing - they are passing people on the courses who will never be able to work in their respective fields.