I’m no political scientist, but I think you are somewhat correct there. The end goal seems to be the old phrase, “from each according to his ability, to each according to his needs.” The approach differs, though: cenrte-left is focusing on the later part of the sentence, so each according to his needs. Far-left focuses on the first part, from each according to his ability.

In practice, this translated to “We’ll force to work your arse off, and we’ll make it illegal for you to keep any merit-based reward for your labour” in the former Eastern Bloc countries. I’m familiar with this, as I grew up in one of those countries. It was illegal to be unemployed, and if you were skilled in any way, you could bet that you’d work long hours for miserable pay, because you’ve had the “ability”.