They surely can detect it, but what are they going to do after detecting it? Loop the last job with a different seed and hope that the model doesn't lie through its teeth? They won't be doing it because the model will gladly generate you a fake source on the next retry too.

This is actually harder then most think. The chances of your app doing this check being bot detected/blocked is very high.

(unless you are Google etc which are specifically let in to get the article indexed into search)