I watched the video,...and the claim of its producers only allude by references and deduce that because the JW reference guide/index indicated the word 'lord' can be used for Jesus
or Jehovah,..that this somehow indicates Jesus is Jehovah in the text. Well,...since JW's are thorougly convinced that Jesus is NOT Jehovah, there placing such references in their own works, does NOT indicate they belief that, and there are ample enough scriptures that PROVE Jesus is NOT Jehovah to go around, to not make this really even a concern,...except if you want to split hairs over a few passages where the word 'lord'
could refer to Jesus
or Jehovah. This is just trinitarian apologetists trying to subdue the J-dubs at their own game - They wont budge.
We might also note, that the Trinitarian claim and rally-cry proclaiming Jesus as Jehovah, confuses matters somewhat, because Jehovah is usually depicted as being 'The Father', and the trinitarian formula strongly emphasizes that the Son is NOT the Father, and the Father is NOT the Son,...so we have a curious combination going on,....considering what 'God-personality' was operating and speaking in the OT times, was it the Father or the Son, or both? - again...we could dive deeper here, but just saying....from a Jewish perspective.....Jehovah is the Eternal Father of all that exists,....this includes the Messiah, His Son. In this view, from the purely Jewish tradition and teaching on the Messiah,...Jesus could NOT be Jehovah...ever! God ever remains the head, and Father-God of the MAN he anoints, as Messiah, the son of David.
A 'Son' is ever the progeny/offspring of a Progenitor/Father,....and
the two can never be the same person, although one can assume they are one in spirit or agreement. Besides many other comparitives and correlaries,....a Trintarian view does not trump or necessarily offer a more logical or consistent Christology, than a Unitarian one. Its just some prefer and find one view more rational than any others, but
one's point of view is always subject to change