When these sinecures, too, fail — they will find out how hated they are.
Not sure what you mean there.
Sinecure n. (from Latin sine = "without" and cura = "care") means an office that requires or involves little or no responsibility, labour, or active service.The term originated in the medieval church, where it signified a post without any responsibility for the "cure of souls", the regular liturgical and pastoral functions of a cleric, but came to be applied to any post, secular or ecclesiastical, that involved little or no actual work.
Sinecures have historically provided a potent tool for governments or monarchs to distribute patronage, while recipients are able to store up titles and easy salaries.