The term "echo chamber" refers to reinforcing opinions and exclusion of outside sources, not the spreading of facts. If WaPo or Pro Publica uncover documents an

The term "echo chamber" refers to reinforcing opinions and exclusion of outside sources, not the spreading of facts. If WaPo or Pro Publica uncover documents and interview a source that yields probative information then getting that info spread to every media outlet is an unequivocally good thing. When The Guardian published the Snowden leaks, do you think everyone else should have ignored it?