A bit unfair. He's done a good report as best he can. It's just that lots of phenomena occur at night over the sea that are not easily explain. A common one is the bright lights from squid boats that reflect off clouds or are refracted by inversions. Space debris is falling frequently also. Oil fires are often briefly refracted. You see this over the middle East with the right cloud conditions.
We cannot entirely rule his observation out; it's just improbably MH370.