Mental Floss wrote:8. Radical
This adjective, meaning “extreme; outrageous; good,” originated in the late 1960s. Radical is another term borrowed from surfer slang, according to the New Partridge Dictionary of Slang and Unconventional English, after which it “migrated into the argot of the San Fernando Valley”—a.k.a. Valley Girls—“and then into mainstream U.S. youth slang.” In 1988, it even appeared in Salman Rushdie’s The Satanic Verses. Green’s pinpoints the “Teenage Mutant Ninja Turtles craze” of the 1990s for bringing radical to the masses. Rad, a shortened version of the word, was also a popular way to describe something you really loved (as well as the title of a 1986 BMX movie starring Lori Loughlin and Talia Shire).
My answer is yes. Just like "swell" was in the 1920s, "based", in the wake of the rise of the dank meme phenomenon, fits the usage of the term to connote "extreme; outrageous; good".
What say you?