The video does not show when Israeli soldiers first opened fire (was it before or after being attacked with pipes and other objects?), which is a key point to be determined. The video does not show activists allegedly snatching guns from the soldiers. I think a probe is more likely to determine whether these allegations are true or fabrications.
IMHO the “probe” should be limited to the following. Did Israel have the right to defend themselves. Answer YES. Was the so called “humanatarian” ship knowingly and willingly provoking a fight. Answer. YES. End of probe. Case closed. IMHO
If Israel fired first, wouldn’t the people on the boat be ducking for cover?