Finishers

The Fall Brawl review mentions Steamboat hitting a tombstone for a two count. I know tons of finishers have become transition moves but back in the day, was there a kayfabe reason why something like a tombstone was finisher for Muraco but not someone else? I seem to recall the Bulldogs doing that move a fair amount. Was the guy using it as a finisher a ‘master’ of the move where others weren’t? I understand this is more of an old-school, protect your finisher thing, but any stories of guys getting pissed that others were doing this?