Yes and no. In practice evidence suggests they were planning to heavily rely on app store install counts for games not using unity services, and thus for which

Yes and no. In practice evidence suggests they were planning to heavily rely on app store install counts for games not using unity services, and thus for which they had no better data. This is part of the reason why they were being so cagey about how they would estimate the install counts, because they would be heavily using relatively crude approaches like that. (and also hadn't fully worked out the details). For IOS, for example, reinstalls don't increase that counter. I'm not sure how it works with the Play Store. They almost certainly said that reinstalls would could because they might count for some platforms.