I would say yes to that.
BTW - did you know that setting a variable to %Delete% doesn't actually delete it from the KM system? All it does is stop it appearing in the Variables Inspector. Of course, if a variable had the text of War & Peace stored in it, then it makes a lot of sense to replace that with %Delete% as it takes up much less room.
Here's a peek inside my Keyboard Maestro Variables.sqlite file in the KM Applications Support folder on my Mac:
There are 574 entries in that file of which 472 are marked %Delete%. In other words over 80% of the entries in that file are redundant!