RE: 1) "it is that components cannot reuse logic" - +1 to this - recently I re-watched original hooks talk by Dan Abramov and was not able to finish it with conclusion different than "you guys really fix issues you invented before". Class-based components and reusability of logic is something that existed years before React, and probably will exist years after React. Even this concept of Dependency Injection and Services that Angular is still on proves that there-are-solutions. There are solutions for reusing logic between classes. Thing that bothers me the most is not that there's something wrong with fixing your own issues, but the fact that developers outside React Core Team start to think that "well, you cannot reuse logic between components".