I think the term "coaching" must just mean different things to different people.
It's like with dogs: Folk say to me, Why don't your hounds return to you when asked. I reply, Because it's not their job.
"Why don't you train them then?"
"Because they're perfectly well-trained already. Why doesn't your labrador run 70km/h and catch hare? Why don't you train it then?
"Plenty of strikers can score goals," he said, gesturing to the famous old stands casting shadows around us.
"But a lot have found it difficult wearing the number 9 shirt for The Arsenal."