I'm not alleging that you're alleging that there's no bias either, but either you have convincing evidence there is, or we fall back to there not being any until you do (and your claims that the conspiracy theory is impossible to prove are unconvincing, many conspiracy theorists say the same thing)

As for your opinion about how much of a conflict of interest or appearance thereof, if you trust NPR as a reliable source on this matter, then we can trust them also saying they have editorial independence (read: no bias)

your assertions of an expectation are similarly unconvincing, it's literally just you claiming as such, when others recognize that, like I can receive a dollar and not be controlled by the giver, so can NPR