Being a guitar player it was nice getting to see Yui learn and progress, making the same mistakes as I did back when I was starting out. But I still can't do two things at once when I'm playing, so I gotta give her creds for that
It would be hard on the show for them to start out as all beginners because who's gonna teach them? It would also mess with the pacing, focusing on each characters progress in learning would slow it down.
Season 2 has 26 episodes and I don't want to watch them just drinking tea and being silly.