The point of a reviews from an app store's perspective is to help users decide whether they would benefit from an app. That some subreddit or Twitter or whateve

The point of a reviews from an app store's perspective is to help users decide whether they would benefit from an app. That some subreddit or Twitter or whatever decides to brigade a particular app does not necessarily provide much signal about whether a generic user will want an app. An app marketplace is not generally going to be interested in facilitating boycotts on apps in the given marketplace. If it wants an app boycotted, it can ban it. Otherwise, the incentives are probably not aligned.