I think the Duke of Sussex is mistaken about the likely demise of exams. I admire the work that is being done by high profile people such as Prince Harry regarding mental health awareness and I agree exams are extremely stressful but at the end of secondary school there does need to be an agreed upon standard in order to admit students to university and for other purposes that matriculation is used for.
If there is no agreed upon standard, such as the A-level, the IB or the HKDSE then universities themselves will set some form of assessment - very likely an entry test – in order to be able to ascertain who is qualified for university entrance.
Instead of predicting an end to examinations, it might be better to highlight the need for strategies to cope with the stress of exams. In my own experience, nothing is better than being well -prepared for the exams, which means not leaving revision until the last minute.
While it might be true that exams will change their nature in the future – I know of one Australian university which offers exams online, supervised through webcam – exams themselves as a way of benchmarking students, will probably survive for some time to come. There have been some attempts to come up with a better system but the use of exams has endured.
Genius is one percent inspiration and ninety-nine percent perspiration.