Waton
“wt's current doctrine does not match Jesus' words.”
That’s just interpretation of Jesus’ word. Maybe WT is right or maybe they will need to change the interpretation. For example, recently WT changed how they interpret prophecy, subtly explaining it in a WT article. According to the article if I recall, not all prophecy has a greater fulfillment, further (and this can subtly affect the interpretation of the Olivette) not all parts of prophecy may have a greater fulfillment. Therefore, using this method as a standard, generation might only apply in 70CE and not in 1914–or maybe it does.
I agree that length of generation is typically 80 years( and wt always had believed this).
But Jesus was very ironic in applying the Bible and what he said and taught was not always clear “cause and effect”, so it is possible that generation he used in the prophecy could have an ironic length or meaning. Take for example his words describing the generation “ by no MEANS pass away” also his words, “ my words will not pass away”. Why would he say that unless he wanted to guarantee the certainty of the prophecy. Given that generation part of the Olivette applies to 1914, at this time JW erasing words in a crossword puzzle written in pencil and plugging in another another interpretation of length of generation or meaning of generation. Safe to conclude that at this time JW don’t know what Jesus meant by generation.