I told you things would get less interesting after Todoroki defeated Izuku–and I’m happy to be proven mostly wrong.
As I had said, following a climax, the descending action has to be less emotionally exciting in order to arrive at resolution. With yet another episode opting for a recap of the previous episode, rather than the traditional cold opening (and to save minutes for new content), we have our resolution: Izuku realizes there are ways to be heroic rather than just victory in combat, and Todoroki is on his way to recognizing he is not fated to be like his parents. The rest is falling into place, and it’s kind of boring: members of Class 1A are in the semi-finals, we don’t get to see much more of Class 1B, it’s all male combatants in the last round, and since the protagonist Izuku is not one of them, attention on how that Sports Festival wraps up is less interesting. Even the animated battles presented that eliminate Mina, Ibara, Tokoyami, and Iida are shorter and hence less visually impressive just on the basis of time, characters, and budget.
What I neglected to emphasize is that often the resolution is tied to closure–and boy, did All Might’s revelation bring closure and hit an emotional target that, if not exciting, with the acting in the English dub by Justin Briner and Christopher Sabat, and accompanied by the musical score, was cathartic. Add to this episode the continued work to make Bakugo more complex, the introduction of Stain to set up the next arc, and the witnessing of Stain’s brutality and how it will put titular character Iida into the spotlight, and My Hero Academia continues to surprise.