As useful as those get info comments
could be, Apple has never given keeping them intact a very high priority.
There were
problems with losing comments in System 7, 8 and 9 , and
OS 10.4 at least had issues as well.
I stopped using get info comments years ago, because they don't seem to be safe.
You'd probably be better off writing up an alphabetized Pages (or similar) document with short descriptions of each each App. Heck, maybe with a hyperlink to launch the App itself...