Descending a steep hill

[Ayahuasca]

I was always told to keep feet off everything and descend in 1st low range under engine braking. Defender 110.

However, this instructor (minute 21):

https://m.youtube.com/watch?v=TsY5umMfUxg

States that the hill is too steep for engine braking, so goes down with the clutch pedal depressed and riding the brake!

Any views on whether this is good advice, or insane?

[Ayahuasca]

There is a clip on Youtbe somewhere of a Defender descending a steep quarry hill under engine braking, then the guy applies the brake near the bottom and the vehicle goes out of control and topples over.