Very interesting topic, Rich.
I'm not sure "hiding" is the right word to describe the use of screen names.
For the most part we use screen names because that is the cultural norm for establishing an identity in an Internet community without offering personally identifiable information that scammers and hucksters around the world could exploit. (And maybe we don't want to embarrass our kids who think we're a little bit too into their baseball careers!)
Most of us leave enough footprints to make it fairly easy for alert readers to figure out who we are. Many of us trade PM's and verify non-cyber identities, as you and I did when we talked on the phone last spring. And a lot of us have introduced ourselves to other members when our paths cross on ball fields, as I did last summer when my son played against Midlo Dad's Virginia Cardinals team (very nice guy, by the way). So for most of us, we're not hiding. We're just hanging a thin curtain that keeps out the prying eyes of the wide, wide world but can be moved aside by anyone in our community who really cares to know.
I also think your situation as a business owner is different from that of a travel coach or a parent. Different personal situations call for different levels of disclosure.
As far as mentioning names, each person has to figure his own rules. Some posters have scruples about mentioning any hs players' names. I personally believe it's okay to name players when reporting factual game information and when constructively discussing top players in a way that does not disparage other players, but I have also called out a poster for criticizing a player by name. I don't see a connection that would oblige me to publish my name before saying that so-and-so is an excellent pitcher for thus-and-such high school.
BTW, you can PM me with the name you guys didn't know. I sometimes have fun trying to figure out who is "hiding" behind the thicker, heavier curtains. I did that for someone a while back who was wondering who had mentioned his kid, and we figured out the guy's interest was harmless.