This is a bad attitude, and doesn't acknowledge the importance of collaboration.

Now in a given position you may not have appropriate communications skills (or missed a memo, intent, constraint) but if you keep your criticisms objective and organized, this probably isn't a trap.

Leveraging some hard to address criticism in a public setting, too late, and viciously is very different from a timely, short, semi-private email. It's rule 1 of communication: know your audience.