LalMohan Saar.
Sorry to say that you are thinking like a turdworlder trying to please the massa, and giving justifications on their behalf.
"Not normally necessary" Don't give ideas saar. Even rafts and flotation devices are not "normally" necessary and they may take that out as well to make economic sense.
"It continued to work". Only thing is, it was pretty useless in this case. I am sure that Boeing's claim would have infected quite a few buyers with Brochure-itis, when it is actually meaningless. It works only when it is close to land, and is useless to troubleshoot serious issues that may happen like MH-370.
"Non payment of fees" . Wouldn't it be wonderful? "Oops! the Malaysian Airlines, who pays my salary, didn't actually pay the fees for ACARS. Let me go down and disable it. That should teach them a lesson. I need to put in an enhancement request asking for a simple button to do this ".
"deviating due to thunderstorms"
Exactly. "Let me avoid the thunderstorm, deviate 180 deg from the flight path, and land on the ocean safely. No way the thunderstorm can get me now!"
Saar. The egg has already landed on the face. The only way to not feel humiliated is to pretend as if it is not such a big deal and is somehow unrelated.