Well, I'm going to be a double posting faggot:
I saw Rocksmith 2014 Remastered uploaded to a piracy site recently and all the Rocksmith games got very high review scores, so I thought I'd try it for shits and giggles. I've played guitar for 20 years and if I'd started with Rocksmith, I'd have never gotten past the first week.
Its gameplay is totally antithetical to how music is actually learned. Learning to play a difficult piece of music is very slow, very tedious, and unbelievably repetitive. You study the music and play the same difficult passages over and over and over again until you get it into muscle memory, which often takes multiple days. No matter how proficient you are, learning a new song (unless it's very simple) is going to involve sitting down and practicing with no tempo, just to get a new unfamiliar note patterns under your fingers. You don't start out playing along with the entire song at tempo, failing over and over until you magically git gud.
I watched some videos of this Youtube guy who seems to make exclusively Rocksmith videos and it's exactly what you'd expect - basically hitting the right notes in the most technical sense, but with the most godawful intonation and terrible articulation and phrasing and vibrato you could imagine. It's completely tasteless and artless. He's scoring points in a video game, not making music.
There's also serious issues with the arrangements and making lots of overdubbed studio guitar tracks into weird hodge-podge single tracks in the game that make for really awkward and unrealistic playing, but that and my many other criticisms get a little technical. The upshot is that I legitimately feel bad for any kid who takes up guitar and this becomes his first impression of how you
do music.