may be because no grandmaster who praticed much of hypermorden achived word champion status
Umm, what is 1.e4,Nf6 called? Why is it called that? What were Fischer and Kasparov's main replies vs. 1.d4? (It involes a kingside fianchetto, in fact Fischer had a famous game where he cracked a broad pawn center with the King's Indian and went on to win) What do Petrosian, Karpov and Carlsen's repertoire consists of? That's right, all played the English and sometimes the Nimzo-Indian.
"Hypermodern" openings are very popular. The term "hypermodern" seems out of fashion though, probably because these ideas are totally mainstream these days. I think the term was invented like 100 years ago.
The hyper moderns were all given Ritalin and calmed down.
Hypermodern was 80 to 90 years ago. We are all PO-MO, now.
Postmodernism, all the rage. So get with the program.
Nah it's all tactics now. You give yourself a gaping hole on d5 or give up castling rights and just attack lol.
What about the above list would you call not popular?
Many famous musicians in the 19th century remained unknown until 100 years later when people become able to understand their works. Playing hypermodern openings (for example, Reti opening, and King's Indian Attack which differs from KID) need deep understandings about various structures caused by the flexibility of pawns, and it's really difficult for most players to handle these.
By the way, openings which FerroMaljinn has just listed are not real hypermodern openings, they're just openings which are popular now. As the first comment says, hypermodern openings have special ideas involved, which are against the "tradition" opening ideas.