I'd trust their manager or skip-level manager more than I'd trust them. Lots of rank-and-file workers really have no idea how they generate value for the organization. Until you've spent a lot of time managing people or at least sitting in on management decisions, it's hard to understand the kinds of concerns that drive corporate decision-making. The fact that a corporate minion thinks their job is pointless means the job actually is pointless like 10% of the time, or that the minion just has no idea how the org works like 90% of the time.
Who is more likely to know whether a job is valuable: you, or the person actually working it?