I agree there's different reasons to choose a school. If you want to play in college before moving on to your career of choice, have a great experience and build great memories, then pick a place where you get along with everyone, where you'll get to play right away and where your coach will become a friend and mentor.
Other kids choose schools because baseball is their career of choice. My son picked the school that had the best baseball program and then he worked his butt off to get playing time his freshman year. I think he has a lot of respect for his coaches and is learning tons from them, but I'm not sure he cares if he "likes" them or "gets along" with them.
To boil it down, there can't be any one sized fits all factors everyone uses to choose a college.
Every kid has different priorities. Different factors matter to them. That's okay.
They should identify those, be honest with themselves about them, and then make their decisions based on their own specific needs.