We're not wrong for basically calling out something that needs to be called out. It's nothing personal against Dellenbach.
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Is it right to call out Dellenbach? Well, let's ask some questions, and let's start with easy ones:
1. Did he have a scholarship at Ohio? Almost certainly not.
2. Will anyone offer him NIL in the portal? Definitely no
3. Will anyone offer him a scholarship in the portal? Unlikely.
So, we can certainly rule out that he made the portal move for money. Now for the hard question. Did the coaches suggest he leave, and that there would be no room for him on the roster next year? That seems plausible to me, but not a sure thing. It might be handy to have him as a backup, so he might still have been able to sick around as a walkon, but he certainly wouldn't appear in any games if did choose to stick around.
With these questions in mind, what exactly do you think it's appropriate to call Dellenback out for? For wanting to go somewhere where he can play (since he won't play at Ohio)? For hoping that some FCS team might give him a scholarship, even thought that's unlikely? Most likely he's in that 1/3 of player who enter the portal, only to never play again, but at least he tried, and I see nothing whatsoever wrong with that.