That’s the thing - it’s the foreigners who not only appreciate aspects of traditional Japanese culture but are willing to put in the effort to preserve it (whether they want them to or not). Japanese people see it and take it for granted (yeah…another tree…great…) particularly young people who are much more into sports (even sumo is at least popular because there’s action!) or pop culture (and I’m not just talking about anime but also overseas pop culture like Korean idols, American singers even, etc.) that a long-winded tale told by some guy in a kimono making gestures with a fan (rakugo) just isn’t very entertaining like it used to be when the Internet wasn’t a thing yet.
The funny thing is in the English textbooks the students use in English classes here are trying to promote diversity by presenting aspects of different people and their cultural backgrounds but they also show foreigners who have adapted to Japanese culture and are actually helping preserve the traditions by learning about it and being a part of it. Like there’s a Swedish guy in the 5th grade textbook that became Japanese (changed his citizenship) and learned from a master on how to maintain Japanese gardens.
Then in junior high school, there’s a section about English rakugo and I believe a little skit on an American or Australian performing English rakugo (her job) in Kyoto that appears in the 6th grade textbooks. The whole idea is to help students realize aspects of their culture and that it can be “cool” to like and participate in those areas too because foreigners also think it’s cool.
Still, I don’t get the feeling that very many of my students are going to play the kotsuzumi or join a kagura theater (despite the potential of participating in one being very high because we’re just a ferry away from Miyajima where kagura performances are often held). Part of it is from peer pressure as those things are old-fashioned and ダサい but also because they’re more likely to go overseas and try to fit in doing things that foreigners do.