Since launch, For Honor has lost 95% of its user base on Steam. If you're looking for a number to associate with that, at launch there were 40k+, and now that number is closer to 2k. It's worth mentioning that this only represents sales of the game purchased on Steam, and that there could be additional players who purchased through UPlay or other methods, but Steam is far and away the largest purchasing platform on PC. That is to say that the odds of UPlay users being higher than Steam users is incredibly slim.
Debate on the reasons why all you want, but the bottom line is this game is dead. Is there anything in your eyes that could save it?