Well, it's not as simple. Telemetry can be something as benign as sending error report when app crashed (which generally is useful if it doesn't leak other data

Well, it's not as simple. Telemetry can be something as benign as sending error report when app crashed (which generally is useful if it doesn't leak other data and leads to better app), or as intrusive as tracking every click. The context is also important, beta test of a game's entire point is to get that data to improve the product.