That need to be practiced to be effective. You can't just watch a video and hope to use them effectively.
That's one reason why I really don't like videos like this...
Discussion
It at least shows some things that could be tried, things that shouldnβt be tried, and may inspire practice.
That would be ideal.
Watching someone play guitar on a video doesn't mean you can play guitar either. I guess some people think watching action flicks makes them a hero?
Practice is required if you want to learn something. I would hope most people understand that. If not, maybe it's for a reason? π€·π»ββοΈ