The real problem with the WTS is the way they translated the New Testament in their New World Translation.
Excellent point Bob! That's a big reason too that the majority of biblical scholars reject the NWT, primarily because the WTS has added the divine name 237 times in the New Testament. Their reason for restoring it is because they THINK that it was removed from the ancient Greek texts. Even though historically this can't be proved.
I'm always amazed too how the JWs claim ownership of the name Jehovah. I wonder how many current JWs are aware of the fact that the American Standard Version of the Bible, first published in 1901, was actually the first English Bible to restore the divine name to the Old Testament. Wherever the tetragrammaton appeared in the Old Testament, approx. 7000 times, it was replaced with the name Jehovah. And as Ray Franz pointed out in his book, "In Search of Christian Freedom", even though the American Standard Version was available to the "Bible Students" in 1901, most of them still used the King James Version.