Nikon made a million copies of the 24-70/2.8 G
Perhaps the early copies had some 'problems'. But everything (especially claims and negative news) on the Internet is exaggerated, it does not really become clear what a 'user' did with a lens.
With regard to the non-vr version, there are some You Tube instruction films regarding fixing the zoom.
The new version is new, so, if problems should arise, the future will learn
Apart from all this, the older version appears to be a bit sharper and better at close range, the later version is better with corners but differences are very minimal.