Be aware that the dipstick that I bought did not read accurately versus the specified fill level and electronic sensor.
As an aside, simply posting one oil level reading means nothing to me with respect to oil consumption. You need to determine a rate of consumption. X km (or miles), level was Y. At X+Z km (or miles), I added a certain amount of oil to bring the level back to my initial reading. A dealer will likely want to establish a pattern of consumption before taking action and will not act unless oil consumption is egregious.
But to the original question, no dealer that I know of would tear down an engine because of a single low oil level reading. As others have mentioned, it may have simply been underfilled at the oil change.Establish a regular rate of consumption and get back to us.