yes steph it not specifically designed or created for other viruses but key word there is specifically, that does not mean it doesn't help though, there is some evidence there it can protect against Syphilis and early trials on covid too were good as well so why be so pessimistic all the time and when its comes to PREP I am very well educated on it, thank you very much, PREP, its forms a barrier Around the cells so viruses cant penetrate so got to help in some way.
That said let the people make up their own mind on it, they are not stupid in my eyes and let them do the homework and research and go ahead only when they are happy to do so.