The problem with that is people who have no guitar experience don't know if they're picking up bad habits, or learning anything of value, or... well, anything. This is their first interaction with actually playing the guitar in many cases. I'm way more interested in having someone who has a working knowledge of what is trying to be taught assess the teaching tools.
You mean bad habit like only playing with the first three fingers of your fretting hand (Slash, Stevie Vai, Eric Clapton, Hendrix, Eddie Van Halen, etc.). Or Bad habits like having to look at your hands when you play to keep reference to where you are on the neck (see previous list), or bad habits like having to change arrangements from their original writing, arranging pieces so the solos depend mainly on very few frets over very few strings and depend mainly on bends for emphasis, or playing slower arrangements because you can't react that fast (Clapton). Or do you mean bad habits like playing guitar slung at waist level instead of up with strings at chest level and the guitar almost completely horizontal across your body (pretty much every modern guitar player, most likely including yourself). Every guitar player has a plethora of bad habits... And frankly bad habits don't make a lick of difference so long as you can work around them which is what seperates the great guitar players from the average. The only difference being the great guitar players realize they have those habits and accomadate them in the pieces they play, such a clapton playing slower works or "simpler" arrangements very very well so it sounds beautiful, or Slash's primarily keeping his fast runs confined to very narrow fret/string ranges. There are very very very few guitar players, even professionally that play with the technical aptitude and lack of bad habits such as Brian Haner Jr., or Yngwie Malmsteen. Most are absolutly atrocious from a habits standpoint.
And I am guessing you were never in high-school band or a professional orchestra Ben as you would realize that actually very little time is ever focused in instrumental training on working on technique (when you have an orchestra of 100+ students you can't exactly focus on technique for everyone in 30 minutes a day). And music theory is generally only a requirment for those planning on going into instructional roles in music (I actually know several fellow musicians that don't have an ounce of theory in them and are first chair players in various organizations). It is literally just practice, practice, practice. And this is from someone who was First chair french horn in high school orchestra, first chair mellophone in marching band and third chair French horn in the USAF orchestra out of Colorado Springs. Now admitedly I am no "rock god" and never played guitar in a club on stage (I only play music now to relax), but from a professional music aspect it hits all the right notes and does everything pretty much perfect from an instructional/practice standpoint.
Funny thing is everyone I talk to that is connected to music in an actual professional stand point (professional band instructors, orchestra members, i.e. people that have spent significant portions of their life focused on music) pretty much disagree completely and think it is a fantastic tool (actually one of my cousin's husband is a professional guitar player and instructor in OKC and he is actually recommending it to his students for practice time and structuring lesson plans around it for those students who have access to it). Not to mention given all but pretty much 2 reviews from the media disagree with you, and all of the player reviews on meta-critic disagree I would have to say you are actually wrong this time.
There is a huge difference between not coming to a consensus/simply having a difference of opinion on a subjective matter, and a total disconnect from reality from everyone else. Especially when that difference of opinion is with people actually in the industry (musical instruction/ professional performance).