You're offering opinion, and my opinion differs from yours. The elections act referenced in the page at the University of Kentucky which I linked makes it clear that it was a violation of campaign contribution law. I know of no one who says that the Russians meddled by attempting to directly alter the vote. So what the press calls Russian meddling refers to illegal contributions, illegal campaign contributions in the form of the propaganda they spread--which are clearly illegal. Referring to what the U.S. and Russia do to attempt to influence elections elsewhere is a tu quoque
fallacy--that someone does something morally wrong does not excuse anyone else for doing the same thing.
As for your snotty remarks about those who voted for Mrs. Clinton: I suspuect that many people held their noses and voted for her, just as I did. In that context, that "sacred cow" remark is really a gratuitous insult.
It seems to me that you're going out of your way to sneer at those who don't think as you do. It seems to me that you've cobbled together a really stupid characterization of the Mueller investigation which has never, as far as I know, been about an accusation that the Russians interfered with the actual votes cast. So you've set up a straw man, whether or not you're willing to admit it.