I think most kdramas have strong hook and the fall off regardless if it's Netflix.
i will agree with you on this with 2025 kdramas (2024 for example was a much better year) but i almost always notice it in netflix dramas.It's like they try to westernize the product which wrecks it.At least thats the vibe i get,i can't really explain why and how i get this vibe.
Typical Netflix show great start but then its like they end up creating something boring and bland.Just Mid! also unnecessarily draggy even though its 12 eps,idk how they achieved that and what was the point of the 2nd couple? i couldnt care less bout them from the start