LOL, not only that, but I actually encourage outcrossing between strains and types of Arabians!
Oh God, I know how those discussions can go, I gave up when I mentioned breeding my Magic Dream/Sanadik El Shaklan daughter to a QH for a lovely 1/2 Arab. I was told that my mare was now contaminated and could never produce pure offspring again, EVER! You can imagine how well that went over and just how warm the ensuing discussion became.
So, yes, my Arabians are 'tainted' and according to that ilk, should never even be allowed in the registry. Joke 'em........etc etc