The answer to this question is found under the covers, exposing the real agenda. “Progressives” have control of the ‘Rat party, and “progressive” = “communist”. They want a one-party state with total control, and with no upper class, no upper-middle class, no middle-middle class... in other words, what ever it takes, economy go to hell, for them to be in total iron-fisted control, as in: USSR, Cuba, NK, Venezuela, China, etc. Anything they say is just a waypoint to their utopia.
Well, maybe not as bad as that, maybe only as bad as Fabian Britain. Though the Labourites have not always held power since 1945, they have successfully left the native peoples permanently poor. While the Germans were rebuilding their country during the first quarter century after the war, and by 1970, were beginning to enjoy general prosperity, The Brits have not. Thatcher economics boasted the country, but the people had lost the work habit, which is one reason why the “coloureds” began to come into the country to do the jobs the people avoided because they could live as well on the dole.
“With no upper class”
There would be an upper class, namely, those running the government. There’s always an upper class.