FWIW, my impression is that data on Wikipedia has gotten somewhat more accurate over time, due to the push for more citations, though I think much of this effect occurred before the decline started. I think the push for accuracy has traded off a lot against growth of content (both growth in number of pages and growth in amount of data on each page). These are crude impressions (I’ve read some relevant research but don’t have strong reason to believe that should be decisive in this evaluation) but I’m curious to hear what specific impressions you have that are contrary to this.
FWIW, my impression is that data on Wikipedia has gotten somewhat more accurate over time, due to the push for more citations, though I think much of this effect occurred before the decline started. I think the push for accuracy has traded off a lot against growth of content (both growth in number of pages and growth in amount of data on each page). These are crude impressions (I’ve read some relevant research but don’t have strong reason to believe that should be decisive in this evaluation) but I’m curious to hear what specific impressions you have that are contrary to this.