Yes, the very next sentence of the abstract says: > Most physicists straightforwardly supplement classical theory with real numbers to which they attribute phy

Yes, the very next sentence of the abstract says: > Most physicists straightforwardly supplement classical theory with real numbers to which they attribute physical existence, while most physicists reject Bohmian mechanics as supplemented quantum theory, arguing that Bohmian positions have no physical reality. Bohmian mechanics is a hidden variable theory.