What were you trying to do that didn't work?

grub2 has noarch packages which are not intended to be installed on all architectures, for example grub2-ppc64le-modules package is noarch, but it is only available on ppc64le architecture.

Please provide the package NVR for which bug is seen:

grub2-2.02-154.el8
grub2-2.06-73.el9

Expected results

grub2 only has noarch packages which can be installed on all architectures, packages which are architecture specific (like grub2-ppc64le-modules) are not noarch but they are rather built only for the particular architecture where they are applicable.

Actual results

grub2 has noarch packages which are not intended to be installed on all architectures.