> 0.17% of the people I interact with have this, whether online or in real life.

I know it's pedantic, but that's not true. 0.17% of people have DSPS. It's entirely possible that you don't regularly interact with anyone that has DSPS.

You responded statistics at a person claiming to have the syndrome. It looked as if you were suggesting that they don't have it because 0.17% is relatively low.

My point is that 0.17% is a sizable portion of the population. Your chances to encounter someone who has it are most likely higher in a thread such as this one. People click on articles they identify with. The same thing would happen if you went to a conference on the topic. I mean, there are signs of comorbidity between DSPD and depression.