Yep, someone can "vibe code" something, that would emulate that human, the typing, the pauses, random typos, backspaces, and edits. There are probably models already available that describe the average delays between two consecutive keypresses depending on the location of keys, etc.
I'm pretty sure Coursera or edX was using this same approach a while back — they'd make you type in a paragraph of text, then they'd use the timing information as a fingerprint or signature, to authenticate you as the actual student.
surely there real-time AI writing checkers? predictability in word choices and sentence-length variation are alr available so maybe someone has to make something that measures delays in sec now. that could be a feature that op implements *like coursera/edx tech as sidpatil mentions