I don't think it was ever precisely accurate in absolute terms, and it surely isn't more accurate now, but it appears to be accurate in relative terms -- i.e.,

I don't think it was ever precisely accurate in absolute terms, and it surely isn't more accurate now, but it appears to be accurate in relative terms -- i.e., as percentage changes in activity over time. A semi-random sampling of subreddits corroborates the conclusions of the data (that there are far fewer user contributions now).