He does need to improve his consistency, but i would argue its rare to find a player 23 or younger who consistently performs every week in the premier league.
For context he's only scored 2 less prem goals than Salah this year.
Hes benefitting from playing in a 2 up front as opposed to leading the line on his own so as long as we keep playing this way under Carlo i think we will continue to see improved performances from Dom
Salah has been consistent for 2 and a half years though hasn't he, IE regular goals in that time
DCL hasn't, his goal return MINUS December has been far below average, his one good scoring month takes his "average" up
as I said, it's all about consistency, if he can keep his form up then it's sound, otherwise we have a striker who doesn't score goals for the majority of the season but bangs in a load in 1 month