Well, some Native Americans are offended by it. Whether or not it's enough to matter, or if there's a relationship between the two, I find to be the more interesting part.
I see what you're saying. But, the reality is that this poll, for better or for worse, effectively ends the name change issue. Dan Snyder/NFL will cling to this for the next 30 years. If Snyder was feeling any pressure before (probably wasn't) it's now gone. The name isn't, and never will, change while the team is owned by the Snyder family.