Hey @VivMendes! It looks like these benchmarks were done with a hot cache. Depending on your situation, this could actually be realistic (when students will often run the same notebook), and it demonstrates the advantage of Julia 1.9.
We have been running benchmarks where we also clear the cache to simulate the experience of first-time Julia users. For a class like https://computationalthinking.mit.edu/ , which has lots of notebooks with different packages, and (hopefully) lots of people trying to run various lectures and homeworks on their own computer or binder, the increased precompilation times are more noticeable.
I wrote more about my benchmarks and experience in this post 
Julia 1.9 beta3 is much slower for first-time users