What on earth does the following question have to do with providing warranty support?
Nothing to do with warranty, but a great deal to do with marketing. They are trying to find out what segment(s) of the market actually purchase their tools, and with that information will develop advertising and marketing strategies to better target those segments.
I'm probably not politically correct here, but I see this attempt to gather information as harmless. Is ethnicity some big secret that people are ashamed to reveal? Is there some way that someone might take advantage of me if I bought a Ridgid pipe wrench and it became known that I have 1/8 American Indian ancestry? Probably not. (Now that I have exposed some of my ethnicity here on the internet for everybody to know about, we'll see what happens!
)
I wouldn't worry about it or take it personally if I were you.
tanstaafl.