I remember asking my parents why Islam is not in any bible prophecy or JW interpretations. That was approx 1993, aged 13 after 'studying' with a Muslim man in our housing estate.
The WT had a book (mankinds search for god) with info on all other religions and it said Islam was the fastest growing religion, I remember wondering why that wouldn't be significant to end times prophecy in the bible.
Well, Islam was invented after the last books of the bible were written and they are not prophetic. Wachtower are not spirit inspired intepreters, so whilst spending 20 years talking about Catholics, the Russians and Anglo-America, they never mentioned the number one controversial, religious, cultural, political movement of these times.... ISLAM. Because it had not occurred yet! What a score that would have been in 2001 had they hinted at it!
They didn't even see sense enough to change their old light to new and name Islam the king of the North. Half read JW's would have said ...yes ... Syria, the caliphate, the middle east is North of Israel ....kinda .....and it all makes perfect sense....(though it doesn't) .....but wow if I was in those HQ wednesday meetings I could have convinced them lol