No. By the time you get hired and you are appointed a set of things to automate, it's usually followed by a long line of deliberation and resource management and prioritizing that's determined on the higher up.

There is a thing called "process debt", in the same way as technical debt, that some things are done manually. This can be mundane routine work, that might be up to 80% easy to automate, but allows for oversight and flexibility and often works with systems that are not trivial to work with. Other times the manual process is just cheaper to maintain than it is to invest in a "good enough" automation. You can also follow this by looking at the practice of offshoring and the amount of automation invested into offshored service centers (who benefit most from these solutions via specialization and scaling).

So even if the company hires a goddamn genius, if you want to automate stuff without breaking existing flows, you need quite a few months of understanding of the environment and the real needs of the process (business wise as well), etc.

And that's why managers think it's a joke idea.

(And it also comes off as extremely arrogant, because it's essentially calling your coworkers stupid by saying "I'll see something that you haven't noticed in years!")