I agree with that. Not knowing if one shot is enough, how it reacts to puberty and the affect on reproduction is just too much of a risk.
There could be a variety of long-term side effects. Who knows? I don’t see the point in getting a vaccine for a long-shot infection based on “who know?,” especially when we’re already being checked for the potential outcome of infection (cervical cancer) regularly, and the treatment is simple and effective.