Applying this idea to the Gemara about Rebbe Yishmoel is wrong. In a Bracha you are saying, according to Pshat, that Hashem is Boruch. Rebbe Yishmoel was not saying that. For a good explanation learn the Maharal, Be’er Hagola, in the fourth Be’er. Until then, consider it Sisrei Torah.
I don’t have the Chiddushei Aggados of the Rashba at hand. Whoever gets finds one first can post what he says about that Gemara.