I was thinking he was being sarcastic
I live in a high-humidity area, so NOT cleaning isn't an option...
after every range visit or hunting trip where I fire, cleaning takes place afterwards.
In arid/desert areas, you can pretty much leave 'em be for quite awhile before cleaning is needed...
Of course there's always the fun of finding a dirt dauber nest in the barrel of yer rifle you left in the barn cabinet...