It was the WP yes.
Polls conducted since then have produced different results. Ofc you are talking about an extremely small segment of the population, and for those who live on reservations, there are limited means by which to contact them and obtain useful data. I just take a step back, "forget" the abhorrent history wrt treatment of native Americans, and think of it like this- would Yellowskins be acceptable for a team name? How about Blackskins? Whiteskins? How about Crackers? Don't think so. Could you imagine addressing a native American by saying, Yo, Redskin!