If your not kidding then I think you deserve all the heartache you get over this issue...and I'm honestly disipointed as well.
If you have evidence for people from mesoptamia being in okinawa then please post it.....always possible, remote, but possible. ...but we have yet to see it.
The world is a smaller place than we think and its possible that people travled more widely than once supposed.....BFD, so what?.......there appears to nothing substanive in terms of cultureal influence or long term effects.
Its like me being a tourist today--it really may impress my buds that I was in Burma, but it doesn't really MEAN anything substantive.,,,,I was there, I looked around, talked to some people, bought some stuff, then left.
Its like all the talk about whom "really" discoverd America--LOTS of people may well have been here prior---but NONE of them lasted or made it---in a very real way America may have been "discovered" many times--but it only STAYED "discovered" once.
So whom may have been here prior is pretty academic...fun to talk about...but substantive it aint.
In any case the real problem here is the 2nd half of the posit....namely just being there is not enough...but if they effected MA practice, or if they effected it but nothing remains (n which case so what?) or what if any CURRENT practices remain.
THEN post the EVIDENCE that if they were there EXACLY how the contributed to extint martial arts practice...in detail.
Seee the one...even if you have the proofs..which I yet to see has NOTHING to do with the other.
My old teacher made a trip to Spain back in the 70's--he worked out with some MA dudes he knew from school--they traded some techniques----can he make a legit claim for "influenceing" Spanish martial arts practices?
Sure--IF you BS just right.