Base on what you have listed the sites? Are they base on first come first serve basis or base on their ranking or base on the alphabetic order or something like that for the listings?
I don't think that they are based on first come first serve basis since he specifically gave the first three gold, silver and bronze flags while the rest have black flags which indicates that this is probably not a random ranking.
I think he ranked them in a subjective manner taking their pros and cons into consideration. However, he needs to remove Bitstarz(Shady Site) from the list asap as one of the posters above suggested.