I don't think you meant to imply this, but for anyone else - please note that the reverse can also be said - closures from an FP setting are objects from an OO

I don't think you meant to imply this, but for anyone else - please note that the reverse can also be said - closures from an FP setting are objects from an OO setting, and it is natural to implement closures if you want them; see e.g. C++ "functors". That is, objects and closures can both be implemented in terms of the other, if your language doesn't happen to offer both.