This fascinates me, if for no other reason than for over a decade now I've been teaching a segment on virtual sexuality within a third-year course on the history of the erotic, and despite consistently positive student comments about the course, have watched sign-ups drop to under half of the levels they were at when the course was first offered. I don't know if South African youth follow the same trends they do in the West and Japan, but I suspect they may, at least among the educated middle classes I see in the university context. I think it's a complex set of pressures which is giving rise to the decline, and I would imagine that general anxiety levels under our current terrible geo-political ramifications are probably co-equal causes with the rise of more abstract forms of online sex expression, porn and fanfic among them.
And the prevalence of virtual sex-substitutes is not, I think, a harbinger of doom: if nothing else, it suggests that virtual connection or virtual eroticisim can be sufficiently "real" and satisfying to the participant that they engender a reduced need to seek them out in the flesh. (I can testify to this myself. I have been single for over a decade now, and it's a comfortable state in which friends, internet interactions and fanfic embed me sufficiently in society and culture and a notional erotic that I'm not lonely, I feel connected and I really don't want or need to change anything).
More than that, though, I see this decline as having the potential to be weirdly positive, because the "meh" of relationship reactions outlined in the article must, I think, quite heavily implicate shifting gender norms and the rise of a more enlightened feminism among women. It's a sign of cultural growth, actually, for large swathes of heterosexual women to have reached the conclusion that no relationship is actually a hell of a lot better than a bad relationship. And a bad relationship is very likely to be one with one of the large swathe of male partners who have not contrived to rise above the misogynistic conditioning of their culture in order to offer something like equality of emotional labour. (The article's description of horrendous male expectations of sex learned from porn was chilling). The article mentions at one point that dating and sexual activity levels among lesbians don't, in fact, seem to have dropped in any equal sense, which seems significant.
I mean, I can see the whole post-Freudian landscape having quite healthily undermined bad relationships across the board simply because modern psychology encourages us to seek individual happiness without requiring us, as previous generations were required, to subsume our own needs to the cultural expectation of the relationship. But the fact remains that that kind of emotional self-sacrifice has always, always been more heavily demanded of women. It's almost inevitable, that relationships will decline in the face of women's realisation that by culturally accepted definitions relationships are so often bad and unfair, and particularly unfair to women. We have the tools to realise this now, and we're mad as hell and we're not gonna take it no more. Participation is, at least, something more within our control than actual male behaviour; female cultural capital has risen enough for awareness, and for women to make the decision to abdicate involvement, even if it is not yet high enough to actually change the game.
There is, of course, another level entirely on which a decline in sexual activity in young people feels potentially apocalyptic; if not Bowie's drive-in Saturday future from my subject line, it feels as though we might, in fact, be drifting into Tepper's version in Gibbon's Decline and Fall. Leaving aside genetic manipulation by benevolent-if-marginal Elder Races, a disinclination to procreate makes sense when current evidence suggests that the biosphere may not survive to support our children; our overpopulated and rapaciously destructive culture may be self-sabotaging in sheer self-defence.