Hmm.
That pic only shows plan form and doesn't really show either way.
Cough, yes that does seem to suggest that there is some impingement, though flat items of pavement can behave oddly in airflow.
The tail-plane really is quite high, and the flaps work to direct the wash
downwards.
Ok, for the sake of argument, lets accept that the tailplane has some effect.
If that is the case, why extra nose down for tailwind?
You only have tailwind until you hit 10kts GS, after that it is just a normal take-off as if you started at nil wind. The apparent wind vector very quickly moves forward.