that's the clear direction it's heading in, gradually taking more power and sovereignty [decisions] away from the nation state's voters,
This is an important point, it's not actually the nation state's voters who get to make the decisions, the voters elect MPs to represent them in Parliament, and MPs make decisions based on their commitment to do the best things possible for their constituents and country.
We have a general election every few years, and the voters (me and you) get to choose once more who we want to represent us, if we didn't like what the last MP did, we get to cast a vote to choose a different one, or a different party.
There is no majority for No Deal in Parliament - (or indeed among the general public) - because a sufficient number of MPs genuinely believe that the economic and social damage will be so great that they cannot possibly countenance it. This is what those MPs were elected to do, they're getting death threats, they're the subject of endless abuse, and in many cases it's going to cost them their jobs at the next general election when they're voted out,
but they're doing it anyway because they take the commitment they made to serve their constituents so seriously.
You're basically advocating mob rule here mack, which is to say, 'The people said they wanted something three years ago and the MPs should just do it irrespective of what they think the damage will be'. You're not actually arguing for the UK Parliament taking back control of anything, because they're doing just that right now and you're complaining about it, what you're actually arguing for is them implementing whatever 'the people' tell them to without critical thought or judgement applied to the process, at which point they effectively become irrelevant, which is the exact opposite thing Leave said they wanted. (Because the charge was, of course, that 'Brussels' was forever subjugating the UK Parliament with all its diktats and rules we had no say in.)
If the current UK Parliament won't pass the result of the referendum, then our democratic processes should ensure that the voters of the UK will be so incensed that at the next general election they'll all get kicked out, and a collection of parties and MPs will be returned who'll get the job done.
That's literally British democracy in action, completely free of interference from Brussels.
Isn't that what Leave wanted all along?