I agree with the scholarship money portion of your message, but I think you're missing some info in the rest.
First, Shak came in as a 165 recruit (#43 recruiting rank), wrestled 174 his redshirt year, then dropped down to 165, struggled, and then started growing. On his way up, he ran into Nickal so kept growing, where he found Cassar, an unranked recruit from the same class. So, there was no "recruit kids at the same weight".
Now, as far as "recruit kids at the same weight" goes, so what? By now, I think most recruits and their families understand that business is business, college sports is college sports. If any coach has an opportunity to get the next Jason Nolf, Zain Retherford, Bo Nickal, they're going to do it. Their limitation, though, is 9.9 scholarships, which creates more need at other weights. After all, I thought Rutgers already had a couple of 125 pounders when they recruited Suriano, so even Goodale isn't above recruiting over his current team members.