Speed up NestedExtensionArray.copy

src/nested_pandas/series/ext_array.py

@@ -204,7 +204,7 @@ def __setitem__(self, key, value) -> None:
             # Copy will happen later in replace_with_mask() anyway
             value = self._box_pa_array(value, pa_type=self._pyarrow_dtype)
         else:
-            # Our replace_with_mask implementation doesm't work with scalars
+            # Our replace_with_mask implementation doesn't work with scalars
             value = pa.array([scalar] * pa.compute.sum(pa_mask).as_py())
 
         if argsort is not None:
@@ -387,7 +387,7 @@ def copy(self) -> Self:  # type: ignore[name-defined] # noqa: F821
         This implementation returns a shallow copy of the extension array,
         because the underlying PyArrow array is immutable.
         """
-        return type(self)(self._chunked_array)
+        return type(self)(self._chunked_array, validate=False)
 
     def _formatter(self, boxed: bool = False) -> Callable[[Any], str | None]:
         # TODO: make formatted strings more pretty