It is actually a pretty clear list. It's listing a number of things clearly. It's also saying that the list is not closed, because anything can happen and you can't predict everything.
What if an employee decides to splash paint on all the cars in the car park? Unlikely, but possible, and it's stupid to try and come up with every such possibility, because you'll never hit them all. The list hits the most common issues and lays them out clearly.
As your number of staff increases, you'll find that you need to be more explicit. Real world people are complex creatures, and managing them isn't simple. What defines 'being a dipshit', for example? For some, it's being a pedant. For others, it's being slow to learn. Others think it's about obnoxiousness. Besides, rules like "fraudulent timesheets are a fireable offense" make it explicitly clear that 'we check these things', and avoid the 'but I didn't know it was wrong' excuses that you will hear with enough employees, commonsense be damned.
What if an employee decides to splash paint on all the cars in the car park? Unlikely, but possible, and it's stupid to try and come up with every such possibility, because you'll never hit them all. The list hits the most common issues and lays them out clearly.