Certification was tried by industry in the 80’s and still exists to some extent, but only those industries that are captivated by titles require them anymore.
That said, there is a case for certification where the certification has value. Most certifications only reflect the ability to pass a test. Being certified in a programming language doesn’t make an effective or efficient programmer.
Other certifications (like the PMP) require validated experience in addition to being able to pass the certification exam. They also require ongoing professional development.
Similarly, there are a lot of experienced professionals (both inside and outside of government service) who do the work well and produce the desired outcomes without the benefit of being “certified”.
The answer to your question needs to take into account the requirements of the certification and ultimately, the demonstrated abilities of the individuals being considered for the position/work.