Actually, not publicly announcing an offer is the last thing you want to do. That is true for ALL sports. Most schools, specifically at the NCAA division 1 level, do not want to be the only school to offer a recruit. And in most cases, kids may be receiving letters and attention from dozens of schools for months (and sometimes years), but an offer seems to never come. But once the first offer comes, the recruit will usually receive several more in the following days.
I am not sure if wrestling has an equivalent- but for sports like basketball, football and baseball there are recruiting websites (rivals, scout, espn) that offer a star rating system. The number of stars you have depends solely on what schools, and how many schools, have offered you a scholarship.
Now do these kids need to get on Coacht and list for all us nobodys who has offered them? No... not saying that at all. But they shouldn't be keeping that information private at all either.