Some developers have a serious problem with understanding that there are times when an app's problems aren't about checkboxes on an issue tracker. The entire spirit of this app is about infringing on intellectual property rights. Furthermore, the app is so basic that it provides zero value to simply bookmarking the YouTube channel in your browser. The entire concept is so terrible that he had to hide behind an appeal to emotion (i.e., "b-bu-but my kids needed it!") just to sell it.
"Maybe I'm naive" is truly the understatement of the century here. This guy credential-izes himself out the ass (developer since 1991!), yet still can't grasp the concept of copyright infringement? At a certain point, you, as an adult, need to learn to swim or stay 20ft away from large bodies of water. This guy belly-flopped right in and dropped straight to the bottom. Then, Google pulled him out and he went right for the diving board again. This guy was clearly hopeless from Google's perspective and in no way worth the trouble he would cause (assuming that this is truly naivety and not some sort of sympathy trolling). Good riddance.