You're wrong. The prototypical model of JS was inspired by the Self programming language[0], itself a descendant of Smalltalk. It is a very crude implementation for sure, but it is object programming nevertheless. Closures being present sours the purity a bit, but closures are poor man's objects[1] anyway.
[0]: https://selflanguage.org/
[1]: https://stackoverflow.com/a/11421598