Zinc is not the only part of the oil that protects the engine parts. Super high amounts of zinc Aren’t necessarily a detrimental point of the oil. As a matter of fact, this is the first time I have ever read such a thing. It seems outlandish. But I guess anything is possible. And oil scientist, check iamb not. But I have read a lot of articles from various oil companies on the subject. They are using Contacts has never shown to be detrimental to an engine from what I have read.
Personally, IMO, I’d keep a quart or two in the trunk for that, “Just Incase” moment on the road.