[arkey]

> A good part of that is a disguised sense of superiority.

Or not. It can be the struggle of having higher than average standards.

Sadly, your list is incomplete without:

- something someone didn't bother to put any effort or thought into at all.

[pammf]

You are right. My comment wasn’t meant to completely invalidate the point of the article or to provide an alternative exhaustive list of causes, but more to bring this other aspect that I felt wasn’t surfaced yet.

[Joker_vD]

Like the accessibility ramp that has a sign post right in the middle of it.