I agree. If Chapek weaponizes Shang-Chi's (potential) failure against future exclusive theatrical windows for MCU films (i.e. Eternals, DS2, Thor3) or alienates Simu Liu, I can't see how Feige: a) doesn't start a cold war via the press and b) threatens (even follows through on) an exit.
The time bomb is when the press starts to focus on Chapek's son, Brian, who is a production exec at Marvel (he got an EP credit on BW) and may be in the middle of all this.