Then the map should be changed!
And the TfL zones map too.
Here comes Alphonse from Marseilles. He's planning a trip to London for the weekend and sees that there's something called a travelcard that, after checking the TfL zones map seems perfect for his needs; he wants to do the Wembley stadium tour, the London Eye and see the Olympic stadium. He's a little concerned that he's paying for zones 1-6 and doesn't need that much but he can't find anything cheaper.
He turns up at St Pancras and is told that instead of a 6 minute ride to the Olympic park he's got to take the underground all the way or change at Liverpool Street.
The staff at the gateline tell him that travelcards are not valid on the direct rail service but this seems to be because they think that's right and cannot back this up with anything that actually stands up to beyond a cursory scrutiny.
This messes up his timetable for the day and leaves him with a rather unsavoury impression of this country rather similar to that I experienced in California when we were stopped by police on our way back from a beach on suspicion of having an open container of alcohol in the car (we didn't) but it was guns out stand with your hands against the car and heaven help me if I tried to say anything.
It leaves a bitter taste.
What's with SET and this route? It's not special, it's just another train. We shouldn't care whether or not the tracks are owned by a private company - or perhaps we should when it leads to complete nonsense such as this.
Similarly with the Heathrow nonsense.
I guess this means that HS2 will be transporting vast amounts of empty space around when the track charges are factored into the fares, still they can always turn it into a dedicated coach and bus lane.
Is it too late to stop it?
Probably yes.