@flyingfalcon
I get the impression you are mixing AoA and pitch attitude.
If you are flying level (not descending or climbing) and there are no significant up/downdrafts then pitch attitude and AoA are linked.
But when you are descending fast you can have a high AoA while having a negative pitch attitude.
So in that situation MCAS would still activate and if the AoA value is correct it would indeed be correct for it to activate.
Assuming the pilot does not pull further on the stick compensating the nose down trim, MCAS will make the plane pitch down.