I think some people are just frustrated that the majority of the new cool weapons/ashes are locked behind difficult content. If you are too rusty to clear the initial difficulty wall, you’d be restricted to very little stuff after buying the $50 dlc.
That being said, a castle skip already exists so you can go collect the Smithscript series and Anvil Hammer - without killing a thing - as long as you explore hard enough!
Same reasons as to following game devs and artists on twitter: updates, work in progress posts, and teaser trailers - first hand news without relying on third party sites