It's very common at all dealerships. My dad worked at a Toyota dealership for 20+ years. He still takes his cars there for service. They frequently overfill them with oil because they don't take the time to let the crankcase drain fully. I worked for a guy who took his vehicles in to the same dealer for service and the Toyota shop forgot to put his drain plug back in then drove his truck around the lot and told him it was good to go. Luckily he did his own inspection because the crankcase was completely empty.
I was in the waiting room of another Toyota dealership and the service writer told a woman that her scheduled service would cost $500.00 because her drain plug was stripped out and she needed a new oil pan. She insisted that the car had always been serviced at that Toyota dealer and they told her they could not verify that and the part is not covered under warranty because it is a "wear part".
The incentive structure at a dealer service department is the exact opposite of favorable to the customer. Dealers are incentivized to perform the maximum number of warranty services so as long as they don't run afoul of the manufacturers expectation of warranty costs they are rewarded for excessive repairs. The excessive repairs are passed on to new customers in the form of less standard equipment and increased sticker prices so as long as sales are at an acceptable level manufacturers have no incentive to call the dealers on it.
When out of warranty cars come in the customer is treated as a blank check to be bled dry because most people won't question the repairs if the price seems reasonable.
e: I forgot about the time that same Toyota dealer that left out the drain plug over-torqued my lug nuts so severely that they warped the brake rotors. I noticed the pulsing in the brakes and pulled the wheels off to replace the rotors and the studs snapped off with my hand wrench! They were so tight that the threads were visibly stretched.
Oh and when I worked there as a lot attendant in high school a tech replaced a radiator but didn't reattach the fan shroud so when I started the vehicle the whole fan/shroud assembly exploded and destroyed the radiator.