I don't have time to write up a detailed study. I made an observation and asked a question. Perhaps someone else would like to look more carefully.
It's only you and me who cares about this and I'm too lazy for this, so...
Yet, you stated that the data were incorrectly sampled and focused on a particular subset. I'm wondering how you know that.
For that matter, I'm also curious how you know what other people care about.