Would technology that allows sealing of beer not apply even better to relatively nutrition-less water? Especially boiled water. Anything that can feed off of pottery + water or metal + water or glass + water is gonna take a lot longer to grow than basically any kind of familiar bacteria feeding off beer + any of the above.

> There may be other reasons to prefer beer where the alcohol is relevant of course

I imagine these are largely the same reasons people drink beer today. Spoiler: it generally ain't hydration or avoidance of disease.