I accept your criticism but I still find your comment to be unconvincing, if you have reason to believe some statistics (such as 5% users) are faked, then it would be helpful to show:

1. Evidence of that

2. Other more accurate statistics that do show it affects more than 5% of users

3. An explanation as to why 5% is a meaningful threshold. Why shouldn't it be lower? Higher?

4. Suggestions on how to reduce workload if it's too much work or it's too hard

Or any other data that you think could back up the conclusion. I understand that this is not easy to do. But if it's not done, then it will continue to be a battle of egos as you describe, and that's not helpful. You don't have to stop complaining but in my experience it pays off to always improve your complaints and make sure they're done in a fully convincing manner. It also helps to avoid insults and personal comments about others, those just distract from the issue. It pays to make sure your complaints are as fact-based as possible. In a big project the original person who made the decision may not even be there anymore, so it's really everyone else that you need to convince.

Edit: And please don't just show them to me, show them to the stakeholders who matter and can get things done. I may think some of your info is interesting but that's about as much as I can do, I am not the person you need to be convincing and neither are other random commenters on social media. I get that it's fun to rant on social media but the real hard work doesn't happen there.