Beside it's not like the media is lacking in energy to spend on inciting social justice mobs.
Why does this community care so much about what happens to this asshole?
It is a false dichotomy, you are pretending that defending the injustice done to Stallman somehow takes away focus from other injustices which is not at all apparent.
The community cares so much about him because he has done significant amounts for the good of humanity. Some people blown up by a drone strike aren't known at all by the community and haven't proven themselves to be invaluable. It's the same reason that you would be sad when a person close to you dies and yet you don't feel the same way when some African kid starves.
People indeed get fired for smaller infractions but those people haven't even closely created as much value as Stallman.
The comparison with the African kid went over my head because approximately none of the people pouring so much effort into being outraged that Stallman got fired have a close personal connection with him. Sure, I’m more upset when a friend suffers than when a stranger does. But you’re not friends with Stallman, are you?