"Lumpenproletariat" is a silly idea and if people are still using it after Maoism and black radicalism and all the rest you should mock them and throw things at them.
"Lumpenproletariat" is exactly the kind of idea an educated German theorist would come up with in the wreckage of the industrial revolution and it's ridiculous to try to carry that notion forward to the age of cell phones and heavily armed maoist prostitutes and if anyone can't understand that you should throw grass at them until they stop being dorks because they're too far gone to touch it themselves.
Like ffs read even one anthro text about black market and grey market economies and stop treating The Man's legal system like anything but a criminal organization.
So you think it's an invalid concept because of a moral judgement of the Bourgeois state's legal system? Does not your invokation of the 'black market' belie your point? That the criminal has an objectively different relation to production than the proletariate?
Also you know what concept could only be thought up by some educated German theorist? That the history of all hitherto existing society is the history of class struggle. What postmodern nonsense!
Beyond the particulars I think you need to go back to the very basics. What's class? Proletariate? What makes the proletariate a revolutionary class? What's meant by it having 'radical chains'? Finally, what's Marxism? Is it just a perscriptive lens?