Read the article.

Raising the recommended RAM requirements is not because the Resolute Raccoon requires more resources than before, not directly – this is not a 2GB RAM jump solely to load the OS and nothing else.

Rather, it’s more of an honesty bump. Components that make up the distro – the GNOME desktop and extensions, modern web browsers (and the sites we load in them) and the kinds of apps we use (and keep running) whilst multitasking are more demanding.