The crap about productivity and cuts, cuts, cuts everywhere result in one person doing jobs that would in the 90s have been done by 3 or 4 from my experience,
Jobs have to change, organisations make decisions because 3-4 people are no longer needed and business needs change, demand for different service change, in the case of public sector we're in this mess because changes weren't made much sooner.
Businesses including public sector can't stay frozen in time, unfortunately it does mean people's jobs are no longer needed, or needed in a different way, which is disruptive.
people need to reskill themselves (which many people are reluctant to do), they need to have skills that are useful to business not expect to keep their job exactly the way they were 2 decades ago.
there are many roles in public sector that took 3-4 people because the technology was last century and investment wasn't made to upgrade earlier which now costs a lot more to put right.