>>430958late, but $250M for the whole series is very reasonable imo, a single 90-ish minute animated film can often cost over $150M, not including marketing (some studios Keep their films below $100M, but Disney/Pixar, for example, generally don't). Granted, a lot of those films dump their budget on celebrity voice actors, but still. There are a lot of people to pay when it comes to animation, and much more pre-production and production work than live-action, and Arcane's entire look is one that requires a lot of fussing around (even though they do know how to cut some smart corners eg using projection mapping instead of 100% modelling environments all the time).
As for the writing specifically, while I obviously don't know shit about the behind-the-scenes, the S2 screenplays were likely already drafted at least by the time S1 started airing since it was said that S2 was in production at the time, and most of the writers also worked on S1. Throwing more money at the writers likely wouldn't have changed much if anything.
I'm not saying anyone has to love the show or whatever, just tired of people thinking this stuff should cost pennies when there's a crew of people working multiple years on one project, or thinking that writing for animation has the same flexibility as writing for live-action can.