First of all, I had to look up what SJW means. Hope this counts as proof that I'm not a SJW :) Also, just for the records, the ideas of Communism and Marxism have zero appeal to me.
I do understand though that alone the word "cap" is like waving a red flag to free market believers (I consider myself being one). Therefore, I was somewhat prepared to get a response like the one from you.
What I would like to emphasise though, I'm not suggesting to cap rewards but to cap the amount that a single account can extract from the reward pool per post. The reward finding process would remain untouched and payouts beyond the cap would not be showered on the community in order to further social justice (something I anyway consider an illusion) but distributed in a stake-weighted manner to SP holders. I'm quite convinced that Marx would not have supported this idea.