It would require them to actually get off the computer and make use of themselves.So what's keeping these SJWs from setting up a communist commune somewhere on a farm, with a closed production cycle, growing their own food on fields and making necessities in workshops and sharing it all?
You can start a communist sub-economy right in the middle of capitalism. There are no laws against it. It has been done in the Israeli Kibuzzim. They are sometimed quoted as examples that communism can work under certain conditions. The free software movement with products like Linux and Libre Office, gnuplot, gcc, Latex etc. can also be seen as a type of "virtual communism". The difference between capitalism and communism may be that it is legal to set up a communist micro-economy in a capitalist country but not vice versa.
[Though small-scale capitalism did exist to a degree in the Eastern Bloc nations, small businesses often operated under semi-capitalist conditions. Nowadays Cuba has legalized small to mid-scale free market businesses.]
(Tries to mix SJWs and "actually doing something" in a pot. It just won't blend. Like water and oil...)