It is rather amusing isn't it. Some people bristle at the mere suggestion that the government might be off base with their investigation. Then they accuse anyone that suggests such of being a conspiracy wacko. I can think of plenty of reasons other than a conspiracy the government might be beating the wrong bush.
It's the conspiracy whackos that are amusing, actually....if there's no information, that's bad and a government coverup. If possible theories ARE discussed (if it isn't your pet theory) then THAT's bad and a government coverup. THEN people start making sarcastic remarks about the government investigating something as obviously ridiculous as "wake turbulence" and how that's a sign of a cover-up even though it's the only specific thing mentioned by the pilot on the cockpit voice recorder.
No government or NTSB spokesman has ruled out terrorism or sabotage. They've stated there's no evidence of either, which is absolutely TRUE by any possible standard, at the moment.
It's a little unclear exactly what people want...the NTSB chair standing at a podium crying saying that it probably was terrorism even though there's no specific evidence of that and we're shutting down the entire US air system forever? It's clear there's nothing else they can do to satisfy people..they can't say nothing, and they can't discuss various theories they're looking at, because both gets them accused of a cover-up by the loonies.