It doesn't have to mean that though does it? It can mean play 2 up top, it can mean put an extra man in midfield, it can mean go 4 at the back.
Last year it meant on occasion push N'Diaye behind the forward, play Jota/Costa/Cav as rotating false 9's. It doesn't have to mean Traore up front or throw every forward sub on the pitch and hope.
I think it's fair to question Nuno's reaction to the tactics employed by both Watford and Huddersfield as we went behind early in both games and put in a tepid performance for the rest of the match. He was outcoached on both occasions.