Nothing.
Reddit and u/spez haven't even offered an apology and/or reversed their position. But let's be real, here - apologies don't necessarily make things right, and they don't necessarily erase what's been done. At best, we can forgive. But people don't forget. Whatever trust there may have been, it's gone now. I've grown tired of the half-assed apologies made by organizations and famous individuals that are supposed to make everything ok and compel us to forget what was done. I don't think I'd care if Reddit and/or u/spec tried to make amends. They would not be genuine - your true colors are visible for all to see. Welcome to the real world where hollow apologetic half-measures don't fool anyone.
If I spat on your lunch because I was having a bad day, I don't think there would be much I could say to defend my actions. Actions speak louder than words, and sometimes when you screw up there's no going back. You're just done.