It does matter how much a shot goes in, and the ability to create those shot is absolutely related to that garbage performance. If it was so easy for him to get those off, he should make more of them. Reality is that he can't get them off so easily but shoots them anyways. What's the alternative, he can get them off but he is just horrific at making them? Furthermore, if you're going to say it doesn't matter how much it goes in....why is there an assumption that it will be good?
Producing **** offense is not a plus IMO. You may say it's not a huge negative....but that's the only thing GG's draft case is built upon. He has a mountain to climb to be average on offense....but even if it comes around he also has more mountains to climb to be a functional NBA player. There are really great offensive players and scorers who still can't be starters in the NBA because the rest of their game is not good enough.