To me, this feels like the same problem as OKRs in an organization. When your goal for success is a high score on the exams for a job rather than the ability to do the job, folks will optimize for the high score on the exam. Setting hard goals that determine success will determine where folks spend their time. Along those same lines, I don't see this as a problem for third party entities like CompTIA/(ISC)2/ISACA/Cisco/Etc to fix, but rather poor management and expectations of employees.
OKRs and certificates aren't bad, they just need to measure the objective value to the organization as opposed to arbitrary standards (such as you must have X certificate to work here, or increasing pay based on certs earned).
Those tests mentioned above can be useful litmus tests for folks in the recruiting space to sort through candidates, especially if they have a large number of applicants, but I worry that it excludes folks that could otherwise be very good at the job/role.