The tool is next to useless because it conflates income with wealth and, worse, it doesn't distinguish between income earned from work (e.g. salary) and income

The tool is next to useless because it conflates income with wealth and, worse, it doesn't distinguish between income earned from work (e.g. salary) and income earned from assets (e.g. rents, equities). Aside from that, it has other flaws. For example, I'd classify myself as "rich" by the (flawed) measure of household income used by the survey--but because I overestimated the percentile range my household income is in the survey result indicated I thought I wasn't rich.