He's right, and he's wrong:
Academics are under pressure to turn a blind eye to plagiarism and "mark positively", which could lead to a collapse in degree standards. This is wrong, and not supported by any evidence. In fact, the opposite is true, with the current plagiarism paranoia tending to disadvantage innocent students.
He says universities have been lenient with overseas students because they rely on them heavily for their fees. This is also wrong and there is no evidence to support it.
The number of first-class honours degrees awarded has risen by more than 100% in the past decade. The number of undergraduates is up by just over 40%. Despite the rise in top-class degrees, Alderman says standards have dropped. This is unarguably true. Do the maths.
So Don Quialderman is tilting at the wrong windmills.