I think the premise you are assuming is wrong: You assume that it is sending false data to them to say "this person (which our algorithm has deemed is a bad match), is a good match". The problem is that until the experiment is done, you don't how good a match that person actually is. So you aren't sending them "false data," because you don't know that it is "false data".

If it is being reported as known, but is actually unknown, that still would be considered as 'false information'. For instance, if I claim to be clairvoyant, and predict that the next coin you toss will come up 'heads', that would be a false claim, regardless of the outcome of the coin toss.