I cant help being of two minds about this.
However, for the most part I support the initiative. If I remember correctly, America recently had an increase in new HIV infections because the anti-HIV campaigns have been slowing down. People are not seeing HIV as such a risk anymore, and as a result it is starting to spread again. This measure can help that campaign out. Think of it this way, if condom usage in porn becomes normalized, it might help people who watch the porn to think more about wearing a condom when they have sex themselves.
I cant help but think that at its core, porn where people wear condoms is a really good thing. Perhaps though they should have taken another option. Provide massive tax cuts for all porn which uses condoms. This will allow the industry to continue like normal, but rewards those who promote safer sex.