Agree, every airline has negative reviews. Often these reviews are posted by people who caused their own problems and have no understanding of how things work.
Early this morning, while leaving when my shift was over, two of my colleagues and I were approached by a passenger yelling at us that we needed to help him. My coworker told him we were not working and directed him to agents that would be coming down shortly. He started yelling, “You have to help me. Sure, just walk away…”. I’m sure he will post a nasty review somewhere. People don’t realize we work hourly and don’t get paid beyond our shift. Also, pax expect us to solve all their problems, even non-travel related ones. So, take negative reviews with a grain of salt.