I’m sorry (and I am indeed out of loop with leftist twitter) but who made these shit up? Not even right wing economists, and heck, not even crank fascist economists make the claims that Starbucks (service) workers are not part of the productive labor. Real goods and services have always been considered as productive capital, and this goes all the way back to Adam Smith.
Just the opposite is true: the argument has always been that whether real estate, rent, insurance, finance are considered part of productive capital. Classical liberal economists like Smith, Ricardo and Marx all rejected these as productive capital, and instead classifying them as non-productive rentier capital. On the other hand, neoclassicals (originated from the marginalists) who form the ideological backbone of finance capitalism argue that real estate is a service, renting property is a service, insurance is a service, finance is a service.
I swear that some right wing billionaires have been funding these so-called “left twitter” to tweet rubbish like this so people are baited into defending service workers and so would be distracted from the bigger argument: which is that finance capital is not productive capital.
By investing into defending service workers, it becomes easier to fall into the trap of agreeing with the false argument “see, real estate managers, bankers, insurance agents aren’t so different than Starbucks workers, we’re all just providing a certain type of service.”
This kind of stupid argument only benefits the finance capitalists.