Agreed. Also agreed the first time he posted it. It's just something I've never understood. Other players on the team notice that kind of thing and it typically does not resonate well, but sometimes old habits die hard, and seniority has always seemed important to these coaches. It doesn't necessarily have to be a bad thing (if the players are equal, then sure, being a senior should count for something), but it should never be a detriment to the team, as in a superior player being sidelined just because he's an underclassmen.
Granted, I admit I'm not the one working with these kids every day. Sometimes it's a matter of maturity and trust. If I have a crazy talented sophomore but he's a total knucklehead, goofs off in practice, acts up in class, etc. then yeah, I'm probably gonna be more willing to play the senior over him. It's easy for us fans to forget the very human element of high school sports. Yeah, the coaches' jobs are to win games, but they're also in the business of molding young men.