True, the title does feel misleading, but I don't know how they could make it less misleading while conveying the same information. At least they mention in the article that "gay and bisexual men are still more impacted by HIV relative to population size".

I didn't see the headline as misleading because it did not mention individual risk.

Would appending a clause mentioning that gay men remain at greater risk improve the headline? Or is it possible that this story should be presented in a very different way or not at all?

It's misleading because the first thing that comes to mind is "wow, the non-gay community is worse than the gay community when it comes to HIV!", which is completely wrong. It would be right if the proportions of both communities were the same, but they are 100x different.