damning point

Cześć,
co oznacza wyrażenie ,,damning point"?

Oto kontekst:

...This (a ban on ads promoting toys during children's programmes) seems to be a sensible way of preventing advertisers from taking advantage of children, but in some ways it also helps to make a more damning point.

Language Practice for Advanced, Michael Vince, str. 206

Dzięki za pomoc :D

bardziej ich pogrążyć?
make a more damning point against them?