I hate (dislike) snow as much as someone from a snowy region
I hate (dislike) snow as much as someone who was brought up in a place where it snows a lot
I have lived in a place that gets heavy snowfall so I really dislike the snow
「雪国」= snowy region / snowy area / place where it snows a lot
「雪国の人ほど雪がきらい」= I hate (dislike) snow as much as someone from a snowy region / I hate (dislike) snow as much as someone who was brought up in a place where it snows a lot
「豪雪地帯で育った経験があるので雪が嫌いです」= I have lived in a place that gets heavy snowfall so I really dislike the snow / I was brought up in a region where it snows a lot so I really dislike the snow