Even if the business has professionals services like tire rotations are not high profit so you get the new guy or part time person on it. So you usually get the don't care person or the inexperienced person. Same with the oil changes, there are a lot of people who need to have things like ball joints and tie rod ends replaced early because they never got greased since the person at the quick change place didn't know where they all were and would miss a lot.
My truck has 11 grease fittings and I ended up printing off a few checklists on some note cards so I can pull one out when I do maintenance to make sure I don't miss them. Think about the shops where they see hundreds of different models of vehicles, there is no way to know everything about them all. On my little check list I put the direction of tire rotation and torque of the lug nuts, amount of oil, etc. Everything I do around 5000-6000 mile maintenance is on one page so its handy.