One of the best things that Xojo offers to programming newcomers is that they can simply jump-in and start to write code. In a matter of a few hours they’ll have a functional app! Nothing new here. (Or for not-so-newcomers, a fast way of creating a functional prototype from a idea).
But as these users advance in their Xojo skills, they probably will care about coding better and to embrace the OOP way of doing things. After all, Xojo is a modern programming language with Classes, Inheritance, Interfaces and a bunch of the usual OOP paradigms that have much to offer: reusability, better maintainability and a lot of flexibility.