Given your framing of this in terms of class warfare, I'd remind you that Marx described capitalism as a major positive force because it "by the rapid improvement of all instruments of production, by the immensely facilitated means of communication, draws all, even the most barbarian, nations into civilisation". He went on to describe specifically xenophobia ("The cheap prices of commodities are the heavy artillery with which it batters down all Chinese walls, with which it forces the barbarians’ intensely obstinate hatred of foreigners to capitulate") but he went on to argue its transformation is deeper ("It compels all nations, on pain of extinction, to adopt the bourgeois mode of production; it compels them to introduce what it calls civilisation into their midst, i.e., to become bourgeois themselves. In one word, it creates a world after its own image.")
This is part of him exalting capitalism for laying the groundwork that he believed would make socialism possible. E.g. later:
> The bourgeoisie, during its rule of scarce one hundred years, has created more massive and more colossal productive forces than have all preceding generations together. Subjection of Nature’s forces to man, machinery, application of chemistry to industry and agriculture, steam-navigation, railways, electric telegraphs, clearing of whole continents for cultivation, canalisation of rivers, whole populations conjured out of the ground — what earlier century had even a presentiment that such productive forces slumbered in the lap of social labour?
So this notion of making an argument that it is about class couched in left wing terms does not change that by that same left wing thinking, this process is progressive. Not by intent, but firstly because bigotry and hate is bad for business, as your yourself point out when you talk of Budweiser boycott (ironically mostly benefiting a more progressive company), and so while some short term losses will be had by people pushing to hard too fast, the regressive parts of the working classes will not just be left to its own, but will be battered over and over by both the bourgeoisie and the progressive parts of the working classes, because bigotry and hate is bad not just for business but also for people.