What did you do? Did you just shrug it off as yourself not having enough understanding of the FDS's arguments? That satan was pulling the strings? That the FDS was 'dumbing down' things to make it easier for some to understand?
To be fair, when I bought into the JW belief system, I was 15 years old. This was back in the mid 90s when the internet was in its infancy and not widely available. I couldn't simply google "Life. How did it get here? By evolution or creation?" and read a critique of the arguments presented therein.
To a sophmore in high school, the arguments presented in that book were solid. I lived in an echo chamber of like-minded individuals who encouraged those beliefs. Any non-JWs who disagreed either lacked the knowledge or the desire to argue with me. Once I took the bait, it wasn't easy to go back. The JW belief system taught that we were imperfect men and could easily be led astray by Satan the Devil. After all, he had been able to lead perfect people astray.
Therefore, I refused to entertain any information that contradicted official JW doctrine. If the Society said that Noah's ark had enough room in it to hold sufficient "types" of animals to produce the diversity of wildlife available today, I accepted it. The Society had demonstrated their credibility to me by "debunking" a myriad of "false doctrines." If something didn't make perfect sense, I reasoned that science was a work in progress. Science books of 50 years ago contained many ideas that were considered wrong by today's standards. I felt that, over time, new scientifice discoveries would result in scientific theories more in line with what the Bible taught.
I don't know what would have happened had the internet been widely available around the time I decided to embrace JWism. I did research JWs from the material that was available to me at the time. I went into my high school library and read encyclopedia entries about them. This wasn't of much use. One of them, I remember, was written by Fred Franz. The library didn't have copies of Crisis of Conscience or similar books written by XJWs. Even if it had, I'm sure they would have been stolen and dumped in the garbage by zealous JWs.
It's no use crying over spilled milk now. I took the bait and paid for by giving the WTBTS my teenage years and early 20s. I disregarded evidence that the JWs didn't in fact have the truth until it was just too much to bear. When the time came, I allowed myself to entertain the doubts that I had discarded earlier in my life, and it all began to make sense. When I finally got to the point where I felt comfortable reading material critical of the WT, my doubts were validated, and I crossed the point of no return. It's not an easy place to get to. The WTBTS does a very good job of convincing adherent to reject anything critical of "the organization."