That said, HN pathologically overestimates the impact of mistakes that companies make. It probably won't be as bad as people say here.

True. In the end, they'll lose a LOT of free users who won't bother to reactivate Buffer. A good % of paid users might stay. Hell, that might even be a net benefit - less resources to devote to supporting the free users.

I will certainly use Buffer App again. For the same reason I used Buffer App before this incident. That might be easier because my accounts were not affected. In addition, the Buffer App team seems to be working hard to resolve the incident. Security issues are unpleasant but unavoidable.