Obviously individual people can be at fault, but it is this further process of asking _why_ individual people fail—pointing to systems, procedures, cultures—that has (in part) contributed to the extraordinary safety of aviation.
So I would say on the contrary, it is that systems worldview that actually leads to lasting improvements. Because human nature is not changing in a hurry.
Systems and procedure are created by people.
Culture is literally just “how people collectively behave”.
It’s people all the way down!
If you update the artefact without replacing its creator, they’ll just “fix” it to their taste again when you leave.