Statistically nobody even knows a guy who knows a guy who's dick fell off. Serious HPV problems for men are not even common enough to be viable urban legend. You have less to back up your DARE messaging than DARE did. It's just not gonna work. The nanosecond someone who took your bait shows up to be interviewed by some Youtube talking head about side effects the already severely damaged (compared to, IDK a decade ago) credibility of the medical establishment will go up in flames.
You need to tell the truth the whole truth and nothing but the truth and let people make their own decisions. People don't "trust the experts" anymore at the scale you need for stuff like vaccination campaigns so you have to operate based on that reality.