User blog comment:Mike Gilbert/Do you think the Reapers should keep their powers after Synthesis?/@comment-26516989-20130515224034

I don't think anyone is going to appreciate the Reapers continuing to brainwash people and morph others into mindless abominations. That being said, we don't know that the Reapers can do. Hell, maybe Synthesis was just a way for the Catalyst to upload Reaper code to everyone in the galaxy, to indoctrinate them all instantly.

Assuming we are taking the ending at face with the Reapers now sharing ancient knowledge; I don't think they would stop indoctrinating people. Evident by the Derelict Reaper the Reapers themselves don't seem to control the effect. Given the fact that indoctrination causes organics to worship the Reapers as Gods, maybe a new religion will form. With the Reapers walking around cities I don't think that will take too long.