When I see this sort of thing I always want to know something that is seldom made clear:
what is actually implemented so far?.
The video begins "This is Atlas, a concept for a new engineering IDE". (To me, that strongly suggests that rather little is actually implemented yet, and that what we're about to see is a lot of canned demos, because otherwise it would be a new engineering IDE, not just a "concept" for one.) But then most of what follows, and pretty much everything on the webpage, says that Atlas does this or that, not "will do".
And the trouble with "concepts" is that unlike actual implementations they aren't much of a guide to what you're ever actually going to get. It's easy to think "X would be cool" and say "Atlas does X", but some Xs are much more realistically implementable than others, and how interesting Atlas actually is depends on which of those Xs are ever actually going to be implemented.
But reading the page and watching the video I have literally no idea where the project is on a scale from "we wrote down some things it would be cool to do and rigged up a demo that pretends to do them" to "everything here is already implemented, though there are a few gaps and bugs here and there".