Grade inflation could be part of this. Look at canadian university admission averages. [1] What percentage of students had 95% or higher grade in high school?

Waterloo: 8.1% (2010) vs 38.0% (2020)

Western: 4.8% (2010) vs 25.0% (2020)

[1]: https://uwaterloo.ca/performance-indicators/students/enterin...

I got into Waterloo CS in 2012 with a 92% high school average. Pretty lucky.