The scan for this book IS of very poor quality. There is a streak down every page that's clearly a problem with the scanner. There's no way they should have put this up for sale in a condition like this.
I think most of the gangs can be used in a 2020 setting, there's a few that are 'over the top'. I simply can't recommend this book due to the scan quality. If they update the scan and clean it up, the rating will improve.