What does it mean that 'The Last of Us' episode 3 has been 'review bombed'?

The Last of Us's third installment "Long Long Time" is an absolutely incredible episode of television, delivering a tender love story between apocalypse survivors Bill (Nick Offerman) and Frank (Murray Bartlett). Not only did "Long Long Time" provide a touching, hopeful look at the end of the world, it also expanded on an implied...