Because one of John Wicks main reasons for existing is choreographed violence? And the violence is sort of character building in the way it shows John Wick’s skill as a killer. There is a case to be made here where sex is sort of superfluous, because unlike John Wick, choreographed sex generally does not contribute to story beats unless it’s a porno. And there’s nothing unhealthy about being uncomfortable watching an intimate moment unless your porn addled brain has made you desensitizes to sex.