They are watching SDI catching up! Welcome to the 21st century! Good for them! We don't teach clearing double hose regs either in OW!
Hiya. SDI does teach tables. I do to every OW class. It is in the dive planning chapter of the manual. It really helps the new students understand nitrogen loading and NDL's better, if it is taught right. I tell my students that yes, we mandate computer use, but they must understand and learn how to use the tables in case their battery dies, or computer just malfunctions.
But, I have always thought that Padi's lack of acknowledgment or encouragement to use technology was really stupid. I am glad they are coming around to that, but don't think they should cut out table instruction.