A dry workplace isn't "ultra puritanical", and implying that immigrants somehow need alcohol in the workplace is hilariously crude.

I was referring the attitude in the USA in general due to the early ultra protestant settlers, and if you look at the history of nativist anti immigrant movements it was aimed at European often poor catholic immigrants who came for areas with a well established brewing and wine traditions.

Yes, I know what you were referring to. But there's a huge logical gap between "established brewing and wine traditions" and "must have alcohol at work".

The prohibition movement was at least partially anti-immigrant. But saying "drink on your own time" is neither prohibitionist, nor anti-immigrant.