And what do you think the government should do? They're withholding information from people who don't need it for the purpose of national security. They're sharing that information with a circle of those who do need it. That circle includes independent and even opposing bodies who all conclude the same thing; Russia needs to be the one providing an explanation.
Also to say the government is moving the goalposts by withholding information from its public is just laughable. They've always done that, it's not new.
Who are these opposing bodies, and who are those that a independent other than the CW outfit?
The problem with independent bodies is that a lot of them really aren't in any real sense actually truly independent of state actors, why should they be... we don't live in that sort of world.