I was also noticing there seemed to be much less back-scratching going on.
I don't know if it's that they don't care to do it so much that the current ozeki seem much more vulnerable to injury. Kaio or Kotooshu or Chiyotaikai might have been able to avoid kadoban or demotion with a favor or two, but for the most part the new guard's losing records come with a pretty serious collapse, and a favor or two from a fellow ozeki won't save them anymore. Looking over the past year or two, the only time it might have helped was Tochinoshin's 7-8 score in Osaka last year, when one win would have saved him his rank, and both Takayasu and Goeido could have well afforded to give it to him. In all other cases it would have been either futile, or other ozeki couldn't spare the loss.