The joint #1 engine, Stockfish, has had a series of embarrassing losses to Gull, a much inferior engine. Everybody was convinced that Stockfish was surely broken because its level of play was so poor.
Then suddenly, in the last couple of days, it has turned itself around. After a series of wins it's only half a point off the top spot (if it draws the current game).
Here's the thing: nothing changed. It's the same code, the same algorithms, the same build. That bad run it had was just bad luck, there was never anything wrong with it.
An excess of information can absolutely be a force for ignorance. People will see patterns even when none exist. Often the only way to stop people from misinterpreting data is to not have any data at all.
If people can be so easily mislead by the fortunes of an unchangingly consistent algorithm, just think how destructive data on surgeons could be.