I know it's not a waste of flares when you spare a multi-million dollar airplane or helicopter and its crew, But do you think this tactic has changed due to the nature of this conflict?
Close Air Support is vital. But with this major action this last week, And the Encirclement of a large city. I would maybe start to worry about some Hidden (20-37mm) Heavy Calibre AA Guns popping up.
Of course manning that gun would be a suicide mission, It would be rooted out within minutes.