Doesn't he specifically say capitalism is an improvement over pre-capitalism and a necessary step for industrialized society to reach socialism? He wouldn't have called it a mistake unless he was really pissed
Yes you are correct. I usually interpret people who say "capitalism was a mistake" to mean "to continue to peruse unregulated free market capitalism in light of all the evidence that is causes harm was a mistake". I interpret it this way because I have never seen anyone who was seriously advocating for feudalism. I have seen a lot of people seriously advocating for socialism, communion, or unregulated free market capitalism.
I figured you were one of the free market capitalist type when reading your initial comment because it seemed like your point was very nit-picky on the meme.
Were you concerned that this meme was being made by someone who wants to return to feudalism?