Transportation was a solved problem with horses, doesn't mean the car isn't a good idea. Same for internal combustion and EVs.

A vaccine is an objectively better solution than PrEP, just because of the time scale, PrEP needs discipline on a daily or x-monthly basis. A vaccine could last for years. Although, realistically, it's more likely to end up requiring yearly updates like COVID, because HIV is also a mutating son of a bitch.

I 100% agree that waiting for a vaccine is stupid beyond measure. The world should do both: make PrEP widely available AND keep funding vaccine research.