“Quality of Life” was a category on the survey, although it was only one of ten. Additionally, they were mostly asking the people who were benefitting the most from their society:
a survey of over 17,000 people from 36 countries – including business leaders, middle-class or higher college-educated individuals and “nationally representative” citizens of each country
So I imagine there were a lot of folks who disagreed with the final rankings, but their opinions were mostly considered irrelevant.
It looks like this would apply to any item used to conceal one’s identity. So, it’s possible that all of those things could be included.