It doesn’t really matter what these people say, famous or not. Throughout IT history, there have always been dissenters. You rarely ever find unanimous agreement.
I think it’s fair to say that the vast majority of OOP developers are perfectly fine with OOP. As a Smalltalker, I would never give up this beautiful language. It’s ideal for managing the complexity of large applications and systems. It has been used most successfully for more than three decades by major enterprises around the globe. Moreover, maintainability and scalability have never been a problem in Smalltalk.
For more information about OOP and Smalltalk, read this.