You might want to scan linkedin.

You'll find lots of Opus Dei priests listed as priests of OD. 

The point about discretion and the "use" of the name OD is never to give in to the weakness of saying "because Opus Dei says so"...the answer would instead be "Because the Cathholic Church teaches beautifully and rationally about some matter....and let me explain why..."

And there isn't a requirement that members of OD only go to priests of OD.  That's a falsehood.
You're way off the mark here. 

And you also might want to broaden your understanding about the full value of  Confession; it's not limited just to having one's sins forgiven.    Some good advice and preventive medicine can aldo be given by priests.  

Too many myth here..just about every paragraph has 2 or 3 myths in it.