agreed, the form of words is so important. I don't know the precise words used, but frankly, with nothing in the public domain except a denial, its a bit of a non-story.
The only truth in F1 is that once it is known that a back of the grid team is up for sale, it gets harder for that team to do business. Caterham has produced tidy if boxy (and this year ugly) cars, and has shown some fight. I hope that the team is able to continue in some form for a few years yet.
And of course Haas won't buy them because (a) he already has bought a slot on the grid, he doesn't need Caterham and (b) all the people and infrastructure is in Europe, and difficult if not impossible to relocate. I'd encourage Haas to open negotiations though, if only because he'll come out much better informed of the enormous task ahead of him...