Of course it isn't weird at all.
The guy playing in his position, instead of him, doesn't score goals, adds little else of significant benefit. The vast majority of those watching can see that.
No one is saying Agyei is a world beater, but almost every time he has come on he has added something to the team performance.... And, quite importantly, actually scores goals, as well as creating opportunities for other goals.
The very weird thing, is KRs reluctance to play him. I dont buy at all any line that he is easing a young, inexperienced, player into the team.