https://bugzilla.redhat.com/show_bug.cgi?id=2010999
--- Comment #6 from Michael Catanzaro mcatanza@redhat.com ---
This is necessary because these libraries have soft-ABI breakage each GNOME cycle, so it is occasionally necessary to constrict them this way.
I don't know about enchant, but glib2, gtk4, and gtksourceview5 should all be API stable for the life of the package. glib2 has been stable for 20+ years. Sure some small things may change, but I don't think explicit Requires is helpful.