Sure. Something to monitor reddit for highly upvoted and interesting content. Once it hits a certain threshold, add the post to WP. Generate the cache entry and you're pretty well set.
Well, I was commenting in particular on the fact that the site is currently a private WordPress server. The plan appears to be a bit more involved than aggregation, comprising interviews with Reddit OPs and curated articles written by Reddit staff themselves (although they’re probably hiring mostly new people to work on that).