I'll start caring when a significant portion of the Native American community starts actually being offended, rather than a few isolated groups government officials are blowing up to show everyone how "cool and progressive" they are. This is a fabricated issue by people who want there to be a problem.
the majority of native americans have more pressing concerns. but regardless of if the majority of them are deeply offended, the very first instance of public protest to the name was by a native american activism group in 1968. there is no debating that there are native americans that are insulted by this name, and a decent portion of them.
there is also no debating that the word redskin is an ethnic slur.
given that there are some people insulted by the use of a racial slur as a team name, what reason, exactly, do you have for suggesting it not be changed?
let's say 10% of native americans find it offensive. is that enough for you? what's your "offended threshold" for when a racial slur becomes inappropriate for use in a fuging team name>