Those "independent streamers" provide live launch streams with multiple feeds using their own equipment and to top it off they have numerous very knowledgeable hosts for all their streams. At this point I suspect they are covering every US based launch from all the major players. Hell, today they broadcasted both the New Glenn and Starship launches less than 24h apart.
But yeah, let's get hung up on an organization name that originated as an Internet forum for discussing all things....... NASA!
Sure, you'll get better telemetry info and the onboard views from the ships that these companies launch in their streams, but the commentary is sub-par at best (they are always sounding so "corporate official" to me) and they just don't provide the best views for watching it live.
I love that these space flight companies have opened up their development process to let the public follow along, I just think they aren't as good at producing live streams as some of these channels that have taken off over the last 5+ years.