Do you have an empirical study to support that your employer should buy you a laptop and possibly a monitor or two to help your productivity?
If there's no study, why should we believe it?
It's like "A study found that parachutes were no more effective than empty backpacks at protecting jumpers from aircraft."
https://www.npr.org/sections/health-shots/2018/12/22/6790830...
When engineers demand evidence that AI is productive, but not that having laptops and monitors are productive, it screams confirmation bias. "I'm right, you're wrong" as a default prior.
I would emphasize that I don't think there's anything particularly wrong with the converse either. If an executive is just absolutely convinced that dual monitors are a scam and nobody needs more than their laptop screen, they can run their company that way, and I'm sure there are many successful companies with that philosophy.
Are you under the impression that we don't bother to empirically prove things that seem obvious, like the safety benefits of parachutes? You don't think parachute manufacturers test their designs and quantify their performance?
This is repeatedly used as an example in the medical community about the limits of randomized controlled trials. This isn't some impression - your impression that such evidence exists is wrong.
There might be some parachute company tests about effective of velocity, etc., but there are no human trials.
Why? Because that would be unethical.
It's a good thing "randomized controlled trials" aren't the only kind of empirical evidence, then.
We know the limits of how fast a human can safely land. Parachute manufactures have to prove that their designs meet the minimum performance specifications to achieve a safe speed. This proof is not invalidated by the fact that it doesn't include throwing some poor bastard with a placebo parachute out of an airplane to demonstrate that he dies on impact.
Also, the answer to your original question is yes. There are numerous studies showing that multiple monitors improve productivity.
I don't think that's making the argument you think it is.