Only the term “chemsex” is “new”. The rest of the facts of what it is and where it is practiced, demographically, in greater %’s than elsewhere are old news. I also do not think it is news that the chemicals involved are bad enough for one’s health to likely lower not just “inhibitions” but the body’s defenses against infections.
There was a theory that HIV alone did not result in a.i.d.s. but with use of particular drugs for “recreation” that supressed/altered the immune system.
Homos need to be drug-addled, and pair up with anonymous strangers, to overcome the tiny remainder of their conscience and engage in their acts of self-abasement.