What is your proposed alternative for a hiring process that doesn’t involve credentials? (And have you actually tried it?) How do you demonstrate merit in a
practical amount of time? What is a strong signal of merit? What does “merit” actually mean to you?
When I hire people, I care about potential and attitude more than merit. I don’t care as much about what someone has accomplished as I do about whether someone wants to learn, is smart and eager to be part of a team. I’ve seen with my own eyes people that come with a lot of accomplishment and a ton of skill, people who have a lot of merit by any definition, and who are terrible people to hire who cause real damage on teams. I don’t believe that “merit” is a particularly strong signal for job performance.
What are you referring to about credentials being gained illicitly? How often does this happen? Are you talking about degrees? I’ve never met someone with an illicitly gained degree, and it would be stupid to try that; you’d get caught immediately. It’s not as easy as just lying. If you’re talking about degrees, I serious doubt that happens “often”, but feel free to provide some evidence that it’s more than statistical noise or anecdotes. If not degrees, what are you talking about?
Lastly, and maybe most importantly, the meta point here is that “actual ability” is to some degree a socially unjust metric. IQ correlates with family income. Why? Because people with more money get better nutrition, more training, better schools, stronger business networks. The advantages in life are, statistically, a major component of what leads to “ability” in the first place.