“Game is huge and is taking way longer than planned” is continually being confused with “development hell”, which is an undefined term but usually involves uncontrollable scope creep, feature creep, no direction, and lack of ability on the development team to finish. Sometimes due to lack of financial resources. The term could also mean the game isn’t being actively worked on in a manner that would allow it to be finished. Clearly Silksong is not under that kind of threat.
The only thing Team Cherry is doing is working on their game. Just under this intense scrutiny of the public pressure because of the original’s quality. And that Silksong began as DLC five years ago.
Silksong is not in “development hell”.