I've never had much a problem with informed decision. What rubs me the wrong way is when these apps hide the data monetization, require it, or don't offer any way to use the service except to opt in. It particularly sucks for services I can't even opt to not participate in, e.g. my work just went live with "The Work Number" service from Equifax so my data is already there whether or not I make an account. Even worse, not making an account just leaves it open that someone else might try to create an account as part of gathering even more involuntarily shared information about me.
When it comes to what people chose to do with their own data though I don't feel a moral obligation to push my views though. If they truly want to opt in and save the $20 (or however much the data is worth in the app) then taking that choice away because I disagree with how they should treat their privacy information is hardly much better than forcing them to because of the same reason. The main difference for me being whether or not I profit off it but, given choice in each case, that really doesn't matter to how the user weighs the situation.
When it comes to what people chose to do with their own data though I don't feel a moral obligation to push my views though. If they truly want to opt in and save the $20 (or however much the data is worth in the app) then taking that choice away because I disagree with how they should treat their privacy information is hardly much better than forcing them to because of the same reason. The main difference for me being whether or not I profit off it but, given choice in each case, that really doesn't matter to how the user weighs the situation.