Not being allowed to see production data (or even in some cases see production!) was my greatest frustration in my last corporate job. But to be fair, keeping engineers off the live data was…pretty non-negotiable at most customers.
Which leads to some pretty boring days onsite, when “onsite” means “in the SCIF”
Though there's a big sliding scale there, between "not allowed to look at prod user data for privacy/etc reasons" and "the giant black hole of nothing-comes-out" in a SCIF.
Which leads to some pretty boring days onsite, when “onsite” means “in the SCIF”