In my estimation, there are probably 30% of vendors that advertised as DA/P free. I doubt that many do now, unless they have done the testing. And even if they do, I do think they run up against a situation where they will be prevented from saying that post FDA deeming.
I'm aware of, by name, at least one vendor that advertised in this way, and seem to recall coming across about a half dozen.
I think the situation was essentially being told by flavor manufacturers (that do test their stuff) that it is not in there. So, that was the basis of those claims. Treated as a great thing (PC-wise) during the initial round of addressing this issue, circa 2010 to 2013. Also helped by claim of "we do not add DA to our products." Meaning, they don't add flavors that have it in there, and are therefore, in their understanding free of it. But if not tested, and if flavoring manufacturer was wrong (not lying, just wrong), then it does make it appear like vendor was lying.
IMO, this is very accurate assessment of almost all vendors that made this claim / told the 'lie.'
Being PC does have its cost. That is about to be made clear in the lawsuit being brought.
If FDA were to prevent the claims from being made, then it would show even more that it was utterly foolish to make that claim at any point prior to FDA involvement.