Yup, Prep just encourages everyone into not using protection
but there are many people who would and do not use protection anyway. And taking PrEP means that's a less risky option than otherwise.
PrEP is for hiv negative people.
If you’re virus level is undetectable from treatment, then you’re not contagious.
It's a rather academic distinction given that it's the same drugs in either case. Definitionally, it's PrEP only if those drugs are being taken as a preventative measure.
a) PrEP significantly decreasing condom use
b) This being a net-negative when considering the hugely decreased risk of HIV transmission as a result.
If you believe this, don't you also believe that seatbelts encourage dangerous driving?
Again, we’re not talking about HIV. We’re talking about all the other potential viruses (including those known and still mutating). To think that we’re done seeing new fatal STDs is to ignore the history of biology and epidemics.