I remember that the above comment was not about engine braking. It was made in the context of just stepping on the brakes and leaving the A/T gear in D rather than shifting to N when stopped at an intersection. Constant shifting from D to N and vice versa might cause damage daw to the transmission solenoids, or something...
When going down Baguio, should your brake pads fail (due to over-use going downhill) - you could fall off a cliff... Now, should your transmission fail during engine braking (which is most unlikely) - your gear should lock-up and your vehicle will literally grind to a halt. However, for the latter, you may very well live to have the damage fixed...
