Right now, it seems that the House of T'Kuvma is extinct. T'Kuvma didn't seem to have any children, and he made his albino torchbearer his heir. Everyone on that ship that followed T'Kuvma seems to have been killed by Kol, and any that survived that slaughter was probably killed when the Ship of the Dead blew up last week.
If Worf and Mogh and Colonel Worf are descended from T'Kuvma or his brother or something from Kling, then it stands to reason that Worf wouldn't be so in awe of Kor, given what his House did to the T'Kuvma movement.