Does the fact that the Malaysian government is insisting the plane went down in the ocean, yet there's not one speck of evidence that happened, make you suspicious there's some kind of coverup?

I haven’t been following this story very much, but I do keep hearing that the Malaysian government and officials are saying they’re positive Malaysia Flight 370 went down in the ocean. Yet there’s no evidence that happened. Debris spotted by various agencies has all shown to be garbage.

Does this make you wonder if there’s some kind of coverup?