I think the rule reads thats it ok if the athlete reaches out to them, but the coaches can't contact you. But I will use the firstname.lastname@example.org just in case. He will be a Junior this year, so we got some time left.
Yes, a parent sending a general inquiry isn't a problem, I've done this several times and the school/coach will typically tell you what they can, and can't do. Nader's and Vincent's email addresses are publicly available on the LSU Sports website. football@ is a catch-all that's probably monitored by a secretary or grad assistant.