The phrase "frustrated people" means individuals who feel angry, upset, or annoyed because they are having difficulty achieving what they want or need. Full definition
It's not hard to find a lot of frustrated people on forums who said that an agent never contacted them or couldn't help them book a partner flight. (creditdonkey.com)
There would also be less frustrated people on earth, because there would be less useless ads. (thenextweb.com)
It's frustrating people need to make a war out of things. (sbnation.com)