SuiNeko wrote:
yes, but, they were still the things that urged the tevinter into becoming tainted in the first place, right?...
Maybe, but I'm not sure it was their true intention. They contacted the magisters and taught them magic, and convinced them to try and free them from their underground prison. This is why the magisters entered the Golden City, which resulted in the First Blight, at least according to the Chantry's teachings.
What the Old Gods actually are and their relation to the Maker is very mysterious. What is certain is that the Chantry teaches that the Old Gods were false. They turned mortals from worship of the Maker, recognized as the "First Sin". As a result, the Maker imprisoned them underground. Their minds continued to roam the Fade like any other dreaming individual's mind would, and they were able to contact the Magisters and teach them to use magic in hope that the magisters might free them. It was for this reason that the magisters entered the Golden City in a failed attempt to usurp the Maker's throne, inadvertently causing the First Blight.
Whether that's what they wanted all along, or if the taint was just an accident, remains to be seen.
Regardless, the fact is, the Tevinter were not aware that their presence in the Golden City would cause the taint.