Baptists are theologically a bit overboard about this, IMH biblically literate O.
Theories of grape juice “wine” just seem to fall flat in light of history and practicality. With no refrigeration and no canning or pasteurization, unfermented juice would be a specialty for a few weeks of the year at most. Drinking alcoholic wine, or else abstaining from all grape products, is universally acknowledged as a normal Jewish practice of the time. I don’t drink publicly, though. So I might not fit perfectly into just any ole fundamentalist Baptist church, but by and large I’d get along with them pretty well.