You can hold a different position from someone else without insulting them as brainwashed. Further, this talking point is disingenuous because it glosses over the fact that people who downloaded the Obama app knew they were downloading an app in support of their preferred political candidate while CA deliberately hid their political associations which might have had an impact on who chose to download the app. Additionally, unlike CA's app, Obama's app did not scrape private conversation messages which is a gigantic breach of trust relative to scraping friends lists (which is still a scummy thing to do even when the app is explicitly up front regarding its political motivations)