The mumbling blows my mind. I flew with a former coworker a few years ago, my first private flight in decades. While very cool, and knowing a lot of information

The mumbling blows my mind. I flew with a former coworker a few years ago, my first private flight in decades. While very cool, and knowing a lot of information is pretty rote or trivial for them, I was astounded how much they (ATC, other pilots, and my pilot… mostly the latter two) mumbled, trailed off, or mixed things up because they were talking too fast. I do realize that speed is paramount to clear the channel and that nothing was actually wrong but it was still jarring to witness.