Not too long ago, advocating for gay marriage was considered an extremist position, but that eventually passed. On the other side, advocating for the illegality of abortion even for a child rape victim would be considered an extreme position in most of the US even though it is the current law in several states.
The Overton window can move surprisingly quickly, and policies which you consider extremist now won't be in a decade.
What fraction of people have to agree with something before it isn't extreme? Support for marriage equality among Americans was as high as 25% even back in 1990, if XKCD is to be believed.
The Overton window can move surprisingly quickly, and policies which you consider extremist now won't be in a decade.