There are many imitators who scrape the feeds and add their own value or commentary. For example, "NASA Spaceflight" is an extremely popular but private channel, unaffiliated with NASA, and it is staffed by fanboys who get absolutely lit over the most mundane aspects of rocketry and space flight. So it depends if you want to join in the jubilant nerdery and listen to these guys crow about every glorious technical detail, and they speculate like crazy, and hold plenty of Monday Morning Quarterback discussions.

NASA/SpaceX commentators are currently a cadre of the most attractive, elegant, and well-informed spokeswomen plus a few guest-men. Their patter is matter-of-fact, sedate, but super enthusiastic and always sympathetic to the missions, the astronaunts and the space program as a whole.

Plus, NASA educational media is never ad-supported or soliciting donations in any form; in fact many US Government works are Public Domain, so honestly if you're an American paying taxes, why not enjoy the fringe benefits thereof?