Of German beers. Even then, the German purity laws aren't.
Alot of damn fine beers use oats in the grist these days and wheat is no stranger. As for your 'traditional malt, yeast, hops and water', North brewing do plenty of them upto and including a beer that managed to hit 18.6% abv.
The things they could teach you about using hops would boggle the traditionalist back to the 70's.
(also worth noting the Gose beers tend to be purchased by the fairer sex which is maybe where all the indignation is coming from?).
Anon because I'm going to be down voted anyway.