Have never worked for FAANG/MAGMA, but the theory is that if you have `n` years of, say, MUMPS experience at an insurance company, the next candidate with `y` y

Have never worked for FAANG/MAGMA, but the theory is that if you have `n` years of, say, MUMPS experience at an insurance company, the next candidate with `y` years of Python experience will have a better chance of getting hired---even if `y=0`. More realistically, you (arguably) have a better chance of getting hired with 3 years of Python exp at a ML startup or whatever, than with 10 years of exp with $unsexy_lang at $unsexy_corp.