Yep.The only con of Parasite is that the poor family thinks they're getting one over on the rich family, but they're actually performing all the labour they are supposed to and not realising it. They are actually being exploited.
Like Snowpiercer the villain isn't the individuals it's the superstructure.
That's how I interpreted the ending. As long as the house (the structure of society) stands, there will always be people living upstairs and downstairs, and that the antagonism that comes from inequality will never cease.