I don't think anyone would suggest criticism is bad, rather its often they way its said. And yes it does lead to improvement. We just need to all think about how its said, by considering that there are always likely people with the opposite views and certainly many sitting in the middle. Someone who like something that is being criticised can provide an emotional response if the critisism is delivered with emotion. Both sides end up taking the comments are personal insults.
...Back to GB, based on the price of premiums and LEs these days there may not be to many on location. But if anyone has a GB premium or LE located near them, I'm will into to bet they rush out to play the magna kickers!!
How long they then keep playing will then vary of course.