coach works for the club. you can ask why your kid doesnt get playing time, or why they played a certain way but you have no say in if your kid plays or tactics. just like the coach isnt going to your job and telling you how to: flip the burger, mow the lawn, clean the pool, sell some dude a policy, build a rocket, rebuild an engine or attach trumps head onto obama's body.
so you are going to tell a coach, who has probably played pro/national team/academies in Europe, coach odp, coach collegiate soccer, probably has at least a C license, etc, about his tactics or player choice? if the coach doesnt show up to practices, isnt showing up to games, or letting kids goof around, you are correct. To tell your coach what YOUR expectations are sounds like the arrogance Claudio Reyna spoke of. Ive manage a few years now and seen some crazy unrealistic expectations come from parents mouths. maybe your expectations are fair, but most coaches are not going to change how they do things because of parents.
i do agree, coaches arent there to power trip and if they are loud then maybe the child shouldnt be coached by them. see this at the field my kid has private group training at. the club has yell first, explain 2nd coaches. best coaches explain and yell when they need to.