Me, 17-minutes into an audio bit in 2017 (paraphrasing):
If you go onto YouTube search for a problem you're having for Xcode and Swift you'll find 15 well-produced videos to solve your problem. […] But you won't find 15 well-produced videos with Visual Studio + C# (or Xamarin).
For the last few years I've thought that Microsoft needs a much larger presence on YouTube (in addition to Channel9). They also need other developers that make these sorts of videos to do them as well. I've long thought they should directly sponsor a series of videos from Lets Build That App's Brian Voong.
But, perhaps this new channel will help.