>>229096
>I predict that the traditional training methods will be almost completely phased out within the next twenty years - and rightly so, because they aren't as good as modern ones.
This will never happen. Even the oyakata who are all aboard with modern weightlifting like Hakuho/Miyagino and Yoshikaze/Nakamura still advocate the traditional exercises on top of it. It's also used for marketing and connecting with the public for their sumo health exercise series.