Just because you cannot afford it or not willing to buy it at that price now does not mean it is "crazy" ... many of us bought 5DMK III at $3499 ... now the price has dropped, but we bought the camera when we wanted/needed it, so those who bought it at that price are not crazy ... 24-70 f/4 IS too will have many takers who need such a lens now ... generally people who wait for several months or years for the price to drop are the ones who do not really need that product.
I think he is just trying to express himself so no point criticizing him and I feel camera body price drops are not comparable to lens price drop...
I, myself, have bought many products just after release but I think that generally people who wait for whatever reasons (except some constraints due to which they cannot buy)
1. may have more patience than me
2. they are better placed than me to buy product with wide reviews/real-life-feedback
3. they may even get other options to select from
4. price drop is always welcome
btw, there are many who have a product but don't really need it.