You are right anekdote, Bryan Sykes is the boffin I inerviewed when he was doing publicity for his book.
But I wouldn't dismiss the theory out of out of hand.
As I mentioned, it came up again this week at a genetics conference. first of all, let me correct myself on the timeframe. It was 15 million, not 15,000, so there's a little more breathing space

There's apparently no doubt the Y chromosome is disappearing. The only question is when.
But according to the latest theory this doesn't necessarily mean men will disappear - rather, it could result in a whole new species of human.
This is how it works:
The Y chromosome only has a small handful of genes left put of an original 1400. Many are "pseudo genes" that have only recently become inactive.
The reseason the Y has been losing genes is that unlike other matched genes which can recombine with a partner, the Y is on its own and can't "refresh" itselt. So mutations build up and eventually the faulty genes disappear till there are no genes and no more chromosome.
But... the latest theory says new genes will take over the ones on the Y that turn embryos into boys. (ie, the SRY gene which switches on the mechanism that produces testes)
So you'll have one group of peple with Y sex-determinging genes and another group with new sex determining genes.
Eventually those groups will split apart because they will only be able to reproduce within their own groups. The two groups will eventually evolve in different directions and bingo you've got a new species of hominid.
Nifty idea, huh?