Because I'm very very clever, and I also read newspapers.
newspapers do not offer all the information that is available in the world, and they very rarely offer statistics on general trends--generally they only offer descriptions of individual anecdotes and descriptions of particular events combined with a brief summary of a very limited and often biased context in which those events occurred.
Newspapers: good for lots of things, but not really useful in this case.
You said there was a general trend: that since fake child porn became available, the consumption of real child porn has not decreased.
I'm questioning whether the condition has actually been met--I'm not familiar with child porn at all so I'm not clear on the availability of certain types, including real vs. fake; and I'm asking for some citation to substantiate your claims about the effects of it.
In short: please cite your sources.
Personally, I'm not interested in child porn or snuff (real or fake, for either), but I do sometimes consume sorts of porn/erotica that other people sometimes consider dangerous because, they claim, the porn whets the appetite. Others, of course, claim that it helps satisfy it.
That is really the entire debate here, about child porn, snuff, simulated rape and anything else. Do images depicting the harmless simulation of harmful acts do more harm or good, in general society?
The information
I've heard on the subject are that there is evidence for both sides, and the effect may very well depend on the individual. If you have more information on the subject, including stats on broader trends, please share--I'd be very interested in it.