Yes, because they are the New Left, not the Old Left. The New Left are an extension of the Frankfurt School and the Fabians, who are effectively using the German "Denazification" agenda on basically everyone who isn't them, and justifying their manipulation and propaganda as a way of morally purifying society of evil through tyranny.

These people are trying to destroy the west to foment the Socialist revolution, or otherwise balkanize it into controllable factions.

Yes, it's Leftism, it's explicitly Leftism to ensure that there's enough destabalization in the country to take it over. They must have total and absolute control.

Beyond that, mass immigration does 2 things: it creates voting blocks for the establishment by importing a dependent class, and it props up the pension system which functions as a life-long debt-slavery.

Jews, like all individual ethic groups, are useless to the Leftist beyond their immediate political tactical value. They can be dispensed and replaced just like any other when they no longer become co-operative or useful.