For those who are still not convinced, here is a comparison:
$ toolbox create -d fedora -r 37 && toolbox enter $ sudo time dnf upgrade -y 26.79user 3.46system 0:49.09elapsed 61%CPU (0avgtext+0avgdata 489304maxresident)k 47400inputs+1243320outputs (266major+377843minor)pagefaults 0swaps
$ toolbox create -d fedora -r 37 && toolbox enter $ sudo dnf copr enable rpmsoftwaremanagement/dnf5-unstable $ sudo dnf install dnf5 -y $ sudo time dnf5 upgrade -y 11.55user 3.40system 0:33.98elapsed 44%CPU (0avgtext+0avgdata 199056maxresident)k 72inputs+1203072outputs (280major+191432minor)pagefaults 0swaps
DNF5 is ridiculously fast. The new text output using the C++ fmt library is also a bonus.