Comment Duh (Score 4, Informative) 52
This article weirdly leaves out the WHY. (WTF?) So let me explain:
Amazon has their own version of Linux and when using AWS there are advantages to using Amazon Linux, like built-in commands and libraries that (obviously) integrate with their cloud services.
Previous versions (1 and 2) were more CentOS/RHEL-based. The newer version (AL2023) is more based on Fedora. So of course more updates are pulled from the Fedora-verse.
The number of AWS instances migrating now is because AL2 will be deprecated in about a year. AWS is keen to remind people to upgrade (not a bad thing, of course) and so people are dutifully doing just that.