No, not in classical Marxist theory, because AIUI, they would be part of the "lumpenproletariat" ā the:
decayed rouĆ©s with dubious means of subsistence and of dubious origin, alongside ruined and adventurous offshoots of the bourgeoisie, were vagabonds, discharged soldiers, discharged jailbirds, escaped galley slaves, swindlers, mountebanks, lazzaroni, pickpockets, tricksters, gamblers,Ā maquereauxĀ [pimps], brothel keepers, porters, literati, organ grinders, ragpickers, knife grinders, tinkers, beggars ā in short, the whole indefinite, disintegrated mass, thrown hither and thither, which the French callĀ la bohĆØme
to quote Marx in chapter five of The Eighteenth Brumaire of Louis Bonaparte (1852). Again, AIUI, he considered this class to have no real revolutionary potential, because even beyond how many were outright criminal scum, their desperate scramble for day-to-day survival, and its competitive nature as they fought for the scraps, left them unable to form class consciousness or class solidarity, and simply too easy to buy off; and thus, to quote chapter one of the Communist Manifesto:
The ādangerous classā,Ā [lumpenproletariat]Ā the social scum, that passively rotting mass thrown off by the lowest layers of the old society, may, here and there, be swept into the movement by a proletarian revolution; its conditions of life, however, prepare it far more for the part of a bribed tool of reactionary intrigue.
I cannot speak to more contemporary Marxist theory, though.
Footnote ā to elaborate on a couple of items in that list:
A mountebank ā from the Italian phraseĀ monta in banco, which literally translates to "mount on a bench" ā is a boastful quack, historically a fast-talking swindler who would climb onto a bench or platform in a public space to hawk "snake oil" potions to the crowd.
Lazzaroni ā historically, these were the poorest class of people in Naples, the street-dwelling homeless beggars (the term historically deriving from an obsolete lazzaro "leper," itself from the name Lazarus/Eleazar, referring to the sore-afflicted beggar of that name in the parable in Luke chapter 16)
Literati ā my understanding is that Marx meant here (over)educated "declassed" intellectuals, writers and journalists who had fallen out of the traditional bourgeois for lack of stable employment, and thus likely to become ideological hustlers whose writing skills and intellectual services were for sale to the highest bidder. (This one is particularly relevant when it comes to monetizing online content, and "content creators" chasing what gets you the most engagement, the biggest "boost" from the algorithms, and ultimately the most donations/subscriptions/etc., doesn't it?)