Team Yaoyorozu's fight against Team Kendo was fucking clutch. Momo's purpose was more than fulfilled: she gave her team the means to combat the other team's Blackness quirk and Mushroom quirk, while restraining Kendo in the process. She produced a fucking cannon and launched a goodie bag of those items, while producing rope to restrain Kendo in a short amount of time, of fucking course she's going to pass out, that's what happens when her quirk goes into over time. So what happened to the match? They were almost about to win. Unfortunately, Tokoyami underestimated Kinoko and did not knock her out, which allowed her to sprout mushrooms in his throat. That allowed Class 1-B to secure the win, their only win. OP is mad that the underdog class one once.