Lets go a different direction with this, whoever posted the video stated “total engine failure”.
We don’t know that to be correct.
That could have been a partial engine failure with a non responsive engine.
Broken throttle cable, clogged injectors if this was a later model SP, many options.
It the prop was windmilling you’d expect a steeper glide.
It may not have necessarily been the instructor at the controls. If the field was easily made why not let the student gain the full experience and fly?
Why should this have been a spot landing on the opposite threshold?
How many hours did the instructor have on type, make or model?
Last but not least, you don’t get a year older on your birthday you get a day older.
The difference between being a student and an instructor is one flight with an examiner.
Lets not judge too harshly here as we don’t know the experience level.
All turned out well enough.
He who cast the first stone better be without sin.
Nobody bothered to give me a familiarization flight at my first CFI job so first flight, first student, I promptly got lost and spend the majority of the flight teaching basic maneuvers till I came across the airport again.