The English prem is comfortably the most competitive, pressurised and demanding league, possibly in World football, so impressive stats (on the surface) from one horse town, easy leagues cannot be relied upon as a reflection of achievement and endeavor. To win or do well in the premiership and then to go on and do well in cups, European competition as well as international football is more deserving than being able to conserve energy and boost your stats in an easy league.
Not saying Messi isn't, as you put it, "goat", but not really deserving of the Ballon D'or accolade THIS TIME!