He might very well be an excellent player.And maybe for advanced players he would be a fine coach. My understanding of the game is not at a level where I can make that determination.
re: the large text
Nah, from what you said he sounds awful. Doesn't have the first clue about how to teach.
Depends on the goals, the player, and the coach. If all 3 are a good match, then coaching can be great... typically it's less then great, but it can still be useful.
He might very well be an excellent player. And maybe for advanced players he would be a fine coach. My understanding of the game is not at a level where I can make that determination.
re: the large text
Nah, from what you said he sounds awful. Doesn't have the first clue about how to teach.