Not the original post, but it’s usually speed. Manufacturing employees get pushed for more output, and usually that means that maintenance gets rushed.

A decade ago I was working somewhere with massive production machines with big rollers to pull the product through. One guy left the machine running to clean it so he could just sort of buff the rollers to clean them instead of scrubbing.

He got his arm sucked in up to his shoulder before someone was able to hit the e-stop