IMO lots of accidental complexity with no real value (in most use cases). I saw myself disagreeing frequently with pre-defined charts and creating an own chart

IMO lots of accidental complexity with no real value (in most use cases). I saw myself disagreeing frequently with pre-defined charts and creating an own chart just for one use case is better done with kustomize. It might make sense though for a bigger org with at least several dozens of engineers to ensure certain internal standards (in which platform engineering might make sense as well).