The problem is all the projects JC Staff has going on dividing their staff
Konosuba movie
DAL S3
Isekai Mom
Planet With
Angels of Death
Million Arthur
Railgun S3
Accelerator
Danmachi
And this is only what I can figure because it's aired recently or will air in a year or less, given how long anime production takes
It's the same issue that made Prisma S3 reach such QUALITY levels (the studio has too many anime in different stages of production, so staff is divided and the shows suffer)