The key here is "average user". To what do we compare the average? By virtue of posting on CH and elsewhere we're part of a group taking advantage of social media. Averages are also skewed by the extremes who tend to get the attention (e.g. those who have gone "overboard", shall we say). And the APA is poised to make such folks diagnosable with a mental illness, thereby ensuring that "unhealthy ego" will be regarded as 'fill-in-the-blank' phobic to mention