It seems like you're discussing a presentation or speaker deck by someone named Kaiji-san. You found it a bit concise, which might be due to its being an "LT" ( likely referring to a Lightning Talk, a short and focused presentation). Overall, you seem to have appreciated the content's adequacy for its purpose. However, your personal preference is for another of Kaiji-san's decks, specifically the Hostr deck, which suggests a difference in engagement or effectiveness compared to this particular deck.