If cc’ing me, please no. Threads with loads of people includes are one of the more gross big-org features. At least I can not turn up to someone’s stupid meeting.
These are perceived to be worse than meetings, again mainly by non-technical teams who have never seen email (tied to a web-based mailing list, specifically) used to drive decisions.
I think this is entirely based on your company and it’s silly to make that broad generalization since we’ve all heard the common mantra: “this could have been an email”.