But that's microdnf, not the current default dnf. I don't think microdnf was used by default in any of our blocking spins/images.
We ship microdnf in the arm minimal image due to issues with dnf and memory usage[1] and it's used quite widely on devices like the Raspberry Pi Zero2W. The Minimal image is blocking.
So if I understand it correctly, microdnf will get a major upgrade, now based on the dnf5 library. Dnf5 doesn't support modularity in its CLI yet, and neither will microdnf. But that shouldn't really matter, because the older microdnf also haven't supported modules, right? So there should be no loss of functionality... ? Even on the arm minimal image, which is blocking.