"the extreme view" is correct and can be used in written English.
For example, you can use it to describe a opinion that is on the most extreme end of the spectrum, "The professor presented the extreme view that climate change is a conspiracy created by the government."
That is the extreme view.
He went on, "I think the extreme view on this issue is Roy Moore's.
In the subapostolic period (the late 1st and early 2nd centuries) some Christian thinkers took the extreme view that all Christians should renounce marriage.
The most militant were the Khawārij (Kharijites), who held the extreme view that serious sinners should be ousted from the community and that jihād ("holy war") should be declared on them.
This is the extreme view, and it has been advocated vociferously by Monica Iken, a thirty-two-year-old former schoolteacher from Riverdale whose husband, Michael, a bond trader, died on September 11th, a few days after his thirty-seventh birthday.
They are prepared to believe that she skirted the law in a property deal known as Whitewater; they may not entirely dismiss the extreme view, put about in recent days, that she defends her husband because she needs a presidential pardon to save her from indictment.
The extreme views turn out to be faddish and short-lived.
"We see the voices that are getting paid attention to are the extreme views on either side," she said.
In the early 1960s, Mr. Buckley, the influential editor of the National Review, a conservative magazine, decided that the extreme views of the John Birch Society threatened a burgeoning conservative movement.
When one thinks of the extreme views of the Christian right, I can understand the struggle to link God with love.
"The extreme views on either side are prepared to use violence to get their word heard the most, so we're going in prepared," Leane said.
