Not really. You become a better footballer by playing with and against better footballers. It's nice to have a nice coach who will give you a hug along the way, but if you want to play NPL in Newcastle or aim higher then none of that will get you there.
Teaching your player (as a parent or as a coach) how to deal with the adults they come across is going to be the single best skill in this space you can give them. How to get on the pitch and play football, take the direction that helps them and filter out the ridiculous commentary from other players, parents on the sideline and coaches will get them much further. You can't always control who is going to coach you, and just because you start the season with the worlds best coach, doesn't mean it's going to end that way either.