Stats like this annoy me. McBurnie has played 1,394 minutes in those league games. That's an average of 41 minutes per appearance. I'm not saying that going 15.5 league games without scoring is good but there is a little bit of context to be applied.
FWIW here's the minutes since last goal for those 5:
1 McBurnie 1,394 (15.5 games)
2 Campbell 1,152 (12.8 games)
3 Muskwe 1,137 (12.6 games)
4 Burke 1,040 (11.6 games)
5 Surridge 456 (5 games)
It's not just McBurnie adversely impacted by this misuse of stats: Surridge has made 2 starts since he scored against Barnsley. The other 16 appearances were off the bench and 7 of those were for less than 15 minutes. Hardly fair to chastise him for not scoring in those circumstances...and he's now at Forest on loan so he's nailed on to score on Friday