>>39983795The truth is that Gen 5 brought alot of people's, including veterans, attention back to the main series thanks to the acessibility of the internet at the time. As a result, many that came back didn't like the new changes that the series went through since Gen 3, thus making Gen 5 more controversal in it's running days. The fact that BW made you use only new pokemon until post-game also made returning players mad.
