Steve House wrote:

I am not an expert but I haven't noticed any glaring errors from the
instructor. What leads you to say "he often doesn't know what he's talking
about?" He may not be silent very much on camera but would YOU want to
watch long minutes of silence from the both of them as Kyle practices this
and that?

I don't watch the show regularly, but have channel-surfed into the
middle of two different episodes and heard what I consider glaring
errors both times. The first time, during stall practice, he pointed out
that the wing stops producing lift at the stall. This is absolutely
incorrect; lift is maximum at the stall. This weekend he was talking
about what to do during an engine failure in the pattern, and said that
the first thing you want to do is get on the radio and let someone know
you're in trouble. I don't know about you, but if I had an engine
failure in the pattern, I would be so busy flying the plane that I might
not talk on the radio again until I was on the ground.

As to on-camera silence, how about a voice-over? For my part, silence
would be better than listening to this guy blather on incessantly about
every piece of minutia that entered his mind. If I had an instructor
talk to me like that, I'd tell him to shut up.

Tim