That's absolutely preferable but (a) you might not have done that -yet- (b) you might not be the person with permissions to do that and they might be too busy a

That's absolutely preferable but (a) you might not have done that -yet- (b) you might not be the person with permissions to do that and they might be too busy and/or unwilling to do so. The title of the article does rather make it clear that most of these are "in extremis" rather than everyday techniques.