All martial arts are combinations of techniques from other styles.
Karate = Tuide + Kung Fu
TKD = Karate + Tae Kyon
Judo = 4 different branches of Jujitsu
Wado ryu = Karate + jujitsu
Japanese Karate =Okinawan Karate + Kendo / Judo philospohy
Jeet Kun Do = A whole bunch of things
That's kind of simplified, but arts don't come out of nowhere, its always a combination of things from existing sources.
And his ideas about it being a sport are misinformed... All the traditional styles have rules as well. Does he also think Kendo, Judo, Sumo, Sanshou, etc are not martial arts as well?
No wait, he said you should do Judo as a martial arts. But didnt't he say "hat else corresponds to the MMA conditions of no clothes but shorts, no obstacles, and a soft flat ground? As a sport, fine, but don’t tell me it’s a martial art. "? I guess MMA in a gi would be a martial art as the rest of those apply to Judo?