He gets us up the pitch on many occasions when it's set up to be full of defensive, he is just isolated constantly because of we are set up, he has Doucoure there for his knock downs which isn't ideal because he can't do much with the ball.
Dom was at his best as a poacher he's essentially just a run down the line get a freekick or a throw in merchant or win a header and hope to relieve pressure on the defense center forward. The system is the issue because once he does these things, nothing is likely to even come of it.
However it doesn't help his case when he can't finish anything nowadays, he always goes low to the keepers sides and the keepers are well onto him now, he never lifts it over for some reason and mixes it up, he's an unconfident striker playing in an awful attacking system.