Ethiopian Airlines is noted for its’ training program.
You cannot train for things that you don’t know about; the MCAS was not disclosed.
Air Canada also has a MAX simulator; no use without proper programming based on actual systems.
One root cause of the MAX issue is how the stick force gradient problem was dealt with.
When you add area forward, you must add area aft; when that area is horizontal, the larger and further forward nacelles, horizontal area needed to be added aft; a larger stabiliser.
That is the aerodynamic solution; what one would expect as a proper “Fix”.
If a mechanical solution was desired, a Stick Pusher would be the norm, not a system which automatically runs the trim to the limit, over-riding the elevator power.