The MCAS kicks in, the nose gets heavier. You pull, and trim a bit. The MCAS kicks in again, the nose gets quite heavy, you pull and trim - more, for zero forces - to negate both of the MCAS inputs. If for nothing just to relieve the muscle tension.
Is it the shared view here, that neither of the doomed crew did the above? That they all instead of a good thorough spin just made a couple of "blips" and watched the A/C in VMC hit the ground? While pulling with possibly all four hands on the yokes, fighting the 4x increased elev feel computer and still neither of them touched the rocker switches to relieve that physical pressure, save for those blips?