Trackers are a tiny part of the problem, most nefarious data collection isn’t some third party ad network (in apps), but is intrinsically bound to the core functionality of the product. It’s impossible to block the data collection when the data collection is the service.

From my experience, this is a problem only with the largest and most popular of apps, the kinds that are made by surveillance companies such as Google and Facebook. And even those usually use dedicated domains for tracking.

So while not perfect, I think Tracker Control works exceedingly well in practice. Don't let the perfect be the enemy of the good and all that.