Full Idea
The main objections to Russell's theory of descriptions are to say that definite descriptions sometime are referring expressions, and disputing the claim that definite descriptions embody both uniqueness and existence claims.
Gist of Idea
Critics say definite descriptions can refer, and may not embody both uniqueness and existence claims
Source
comment on Bertrand Russell (On Denoting [1905]) by A.C. Grayling - Russell Ch.2
Book Reference
Grayling,A.C.: 'Russell' [OUP 1996], p.36
A Reaction
The first one seems particularly correct, as you can successfully refer with a false description. See Colin McGinn (Idea 6067) for criticism of the existence claim made by the so-called 'existential' quantifier.
Related Idea
Idea 6067 Existential quantifiers just express the quantity of things, leaving existence to the predicate 'exists' [McGinn]