I learned in a Citabria with no flaps. We would do the pattern at 80MPH, and since it didn't have flaps, we would maintain 75-80 to final. On final, I would reduce throttle further to hit 70 over the fence, and then do a 3 point landing.
I think this is pretty close to the OP's friend method. Also, I think it's being done because the Citabria has; A - no stall warning mechanism. B - an abrupt and definitive stall. C - poor glide ratio compared to other trainers. D - TW aircraft.
Is it the best way? Heck - I don't know, but it might be the safest way for a 10 hour pilot. Pretty sure the CFI is going to advance him toward a more refined approach and landing speeds in the 60-70MPH later when his skill level gets better. Right now, there's a real potential for a stall-spin in the Citabria due to the above. Honestly, I don't mind that he's landing long. Long is better if it's stabilized and there's enough runway.
When I started, I would turn off the runway at 2500-3000' from the start. By the time I was towing gliders, and knew what the plane would do, and I could handle it right I was turning off at 1500', and wore out brake pads.
Old plane, old school. Leave em alone for another 15 hours.
YMMV
It's easy to feel the stall coming on, no horn needed, and if you step on the high wing you ain't going to spin.
If he is just doing low passes, it's still not the best way to teach it, when the first thing the student learns is flying a approach way too fast, that's a bad foundation every day of the week.
I do the low pass thing, I have the student come in at the correct approach speed, round out, bump in a little power to hold her off 6", if the wheels touch burp in a little power to get back up and go till there is no more runway. Rinse and repeat
Once the student has that down, tracking the runway well and has a good feel for the plane, I tell them that once the mains touch pull the throttle back, but keep flying her down the runway till the tail is about it die, then let it down, then stick full aft.
Then same deal but getting her down on the numbers
Then three points (which come quickly to most)
Then power off abeam 2 points
Power off abeam 3 points
Cross wind landings
Tail wind landings.
No where in here are we flying our final approach at a incorrect speed.
I can think of no reason to fly your final at 80 MPH, that's cookin' in a 7ECA!
. By the time I was towing gliders, and knew what the plane would do, and I could handle it right I was turning off at 1500', and wore out brake pads.
Old plane, old school. Leave em alone for another 15 hours.
YMMV
A 7ECA should be able to be stopped in 1500" without needing much, if any brakes.
I'm not old, but learned to fly in planes older then the 7ECA, been accused of being old school in how I teach, but shooting a approach at 80% cruise speed just doesn't make sense.