er, nope, it doesn't do that. It may be semantics but the 2.5 degrees is not an attitude value, it is the shift of the trimmable horizontal stabiliser, THS by a maximum value of 2.5 degrees Aircraft Nose Down, AND, which is also stabiliser leading edge down, which will give whatever to the aircraft attitude, dependent on what the driver does on the control column. MCAS is an input for control force, it is not a pitch attitude adjusting system, of course left unchecked it apparently is good for about 40 degrees nose down...
It changes the feel by changing the pitch of the whole plane. Which is a weird way to change the feel of the control column. Change the attitude of the whole plane.