Liking something for diversity does not mean you should not criticize some of the groups that make a given entity diverse for various infractions of basic logic, universal ethics, and a slew of other things. It's not as though by calling someone, or a group at large, out on a few undesirable qualities or actions that group will stop visiting the site. And even if they did, there are some hordes of people that only serve to be a disruptive force who are contrary to progress and don't belong. Granted there is a bit of subjectivity here since personal experience might outweigh rational thinking and compell you to bring down the proverbial hammer on someone, or some ones, who are entirely undeserving.
What I'm more or less getting at is that you can't get wholly reflective like this when you really haven't done anything wrong. You shouldn't run from making mistakes...rather, you should act as you think you should act in the moment. Do NOT detach yourself from the situation and think objectively, since you'll be sorely lacking in experience in that case and a worse leader as result. Once you're full on mistakes, and can spot an underlying pattern in your lapses in judgement AFTER the fact, better knowing how to predict human behavior, then you can begin to act as you feel you ought to. After a period, regress to a more brutish fashion, reflect, rinse, repeat, and you'll be all the wiser at the end of the day.
Until then, just keep on trucking.