Am I unreasonable for getting so annoyed about everyone at work copying everyone they know into emails? They always seem to be asking stupid questions. What happened to picking up the phone? I can answer your question, but now I need to reply to everyone too - and THEY DON'T CARE!!!! You're making me state the bleeding obvious.
It wastes more senior peoples time. And undermines my authority.
(and makes me want to walk out of work and never come back)

We should have a policy to only cc people in if we want a reply from those people. If you're not expecting a reply, tell them about the issue at next opportunity, or let someone else in their team tell them...