The year Taggz won golden boot for us, he scored like 1 in 10 chances. And we adored him for it.
The only stat that matters is goals, and Roy has a phenomenal amount for the time he spends actually on the field for us. And like others have said, I struggle to predict we get someone with a better conversion rate.
Plus I don't see Roy any less functional this season than most others in the squad either. It's not an isolated problem.