Wow! Interesting debate.....
Just my opinion, but what I think Sigung Kailani was trying to share was that, Sijo and the Co-Founders were the first of the "modern" marial arts Masters to mix them into a "street" system. Not taking away from the "ancient" arts, I think she was taking about, the Judo, Juijtsu, Karate, Kung-Fu, American Boxing arts that would be considered, "modern," not arts that are one or two thousand years old.
As for Bruce Lee (one of my heros) I think he was about 8 or 9 years old when Kajukenbo was developed.
And I also don't get the "domestic" comment or what it has to do with this discussion.
Aloha,
God Bless Sijo and Kajukenbo...
Gary Forbach