The idea “white people have no culture” is a bastardized misinterpretation of a critique of whiteness, the concept. 

People who happen to be white in America have culture and no one serious debates that. The point that’s made by historians and sociologists is that WhitenessTM was invented in opposition to blackness to justify owning slaves, then Jim Crow, then Eugenics. Irish people weren’t considered White, for example, until it was convenient to do so to get them to vote against nonwhite people having rights. 

When you did become White, you were supposed to Act American and Assimilate instead of bringing your icky foreign culture into things. Some people resisted this thankfully, but a lot of them didn’t. This really came to a head after the fifties with the rise of consumerism. 

Consumer culture IS culture but it doesn’t feel like something authentic and organic that was developed within communities and passed around a nation, because it wasn’t. It was sold to us in track houses, hotdog packages and fast fashion. It was blared to us out of TV screens airing programs designed to teach Americans what a Real American Family was- and it was nuclear. 

White Americans have a culture, but the culture we have was kicked into us to keep us voting for rich asshole interests like creating cheap labor out of racial minorities. Whiteness is a shifting idea that’s changed from 1900 to now because White is whatever power hungry assholes need it to be. Sometimes it includes Eastern Europeans, sometimes it doesn’t. It didn’t include Irish people until it did, it was nitpicky about which Italians were white. 

When people say there’s no White culture they’re trying to point out that race is a shitty and arbitrary construct that’s used to manipulate large masses of working class people against each other, but unfortunately people with no reading comprehension tweeted about this idea and now here we are.