I think everyone uses that approach now. It's a solid way to recruit, especially when there are key players you want to grab and I use it every year to an extent.
I'm just saying that for 6 star programs it is usually quite easy to have 20 players with your school as #1 on their list within the first 2-3 weeks of the season by simply quick calling. After that, it's not too hard to sign most of those guys even with quick calls since nearly every pitch will be Elite/Excellent/Great.