Myth #1 - false - Reading music will make you a better guitarist, for instance reading scales, chords, etc

Myth #2 - false - I think you do need to read music. Everyone that I know whom can read music is still playing and most all of the ones that can't read music no longer play. How can you apply theory if you can't read music?

Myth #3 - Maybe true but I don't know for sure.

Myth #4 - First off he played the wrong C note if he is reading from piano notation. For guitar notation he is correct. Plus all of those C notes he is playing are the same notation, i.e. the same note on different strings. That is true for all sting instruments.

Myth #5 - False. Sure you can name the notes you are playing but reading music will tell you how they interact with themselves and other notes. Most tabs that I have seen do not show you the note durations. Instead of taking all that time to learn tab put it to better use and take that time to learn to read music.

Now if you just want to strum a few chords on a guitar and sing sure he may be right. But if you want to learn the guitar correctly you must read music.

The above is my totally biased opinion. Yours may vary.

PS - I had to chuckle when he said learn rhythm notation. It you can't read music how do you know what a quarter, or eight, or 16th, etc duration is?

I think videos like this send the wrong vision on how to play a guitar.

Whenever I get something stuck in the back of my throat, I dislodge it by drinking a beer.
It's called the Heineken Maneuver.

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware