There's little reason for users to use these macros in their private
configs over plain ol' `with-eval-after-load` and `use-package`, unless
they're writing their own modules.
It's my fault for signal boosting them in documentation and whenever I'm
asked for help, because beginners now believe they are somehow
required for Doom to work correctly (there are guides out there
telling beginners that migrating to Doom involves replacing all
instances of `with-eval-after-load` and `use-package` in their
pre-existing configs with `after!` and `use-package!` -- which was never
true).
What's more, I plan to replace `use-package`, internally, so the
`use-package!` macro won't exist for much longer.
