Obj-C has not been deprecated. And in fact the only parts of Obj-C itself that have actually been deprecated were during the migration to "Obj-C 2", where a slew of runtime functions (that nobody used) were removed, as well as direct access to the `isa` pointer (I don't actually remember if the `isa` pointer access was removed when Obj-C 2 was introduced or later when we got tagged pointers).

What the parent is likely referring to is APIs from the SDK, which do get deprecated, and then years later (many years later) removed.