If a useful feature is incompatible with OO, it's a problem with OO, not with the feature. Properties allow one to work with plain old data (not everything is meaningfully an object with behavior) without freezing the underlying implementation forever. Fewer (or maybe more decentralized) religious arguments like this is one of the few things I like about my job in C++. (Shame C++ doesn't have properties, these would come in handy in refactoring config handling code that I currently work on, but on the other hand the last thing C++ needs is yet another feature hidden under common syntax that may blow up allocations and runtime unexpectedly).

EDIT: to clarify: for example, I consider std::optional as an example of a very "un-OO" type that's immensely useful. In general I like the idea from functional programming that complex types can be treated no different than primitives, rather than the OO way of wrapping and uplifting everything until even integers have methods.