I've been a Redditor for 8 years and I have never seen any of the current or former staff condone or encourage Internet mob justice.
My observation has been that they're pretty hands-off even when things get out of control and they often drop into a thread or put up a blog response that almost chides the community for their overall actions.
Perhaps their (mostly) hands-off approach is what makes you think they're not against Internet mob justice? Any admin moderation leads to a Streisand effect giving the problem more visibility and it is very much a problem with the community at times.
My observation has been that they're pretty hands-off even when things get out of control and they often drop into a thread or put up a blog response that almost chides the community for their overall actions.
Perhaps their (mostly) hands-off approach is what makes you think they're not against Internet mob justice? Any admin moderation leads to a Streisand effect giving the problem more visibility and it is very much a problem with the community at times.