MCAS had concerns from the Tech Pilots - down to .2 M confirms that.
Speculation is above that speed it was still a concern - over the sms beer/s on a previous approach
If the culture at Boieng is to be believed now can this be treated - Did he dig deeper? Did he report? To whom? Who pushed back? Would he have been allowed to follow up with FAA without asking for permission? Did he recieve a gag order?
What exactly would YOU do and would your wife agree?