There's a correlation between substance abuse (not addiction) and infections.

> “Chemsex is a rapidly emerging pattern of drug use, not just amongst men who have sex with men as often assumed, but heterosexual patients as well,” Dr Richard Ma of the Royal College of GPs’ Sex Drugs Group told the Telegraph. [https://www.rt.com/uk/320758-chemsex-hiv-outbreak-doctors/]

I see this as something related to the bar/disco/club culture rather than something linked to condoms.