Stern advice to immediately change passwords despite persisting ignorance surrounding the circumstances was paramount idiocy. Why give away one perfectly good password, when you could give away two?
Oh right, passwords are really so expensive that losing two would really put a dent into your pension plan. Where do you buy your passwords?
But seriously, the reason to change the passwords was to prevent copycats from using the (freshly) published passwords. Sounds sensible to me
I can understand your anger, but please direct some of that anger to your own "unprofessionality" (if I may reuse your words) to use web passwords also on your personal accounts or your servers. Are you sure your password would have been safe from a dictionary attack? If not, all that checking and changing would have been necessary even if the passwords had been hashed.