A lot goes wrong with this

First you need to find a different mechanic. Try a tire and alignment shop. They specialize in solving ride height, alignment, and noise problems.

Second, height problems relate to the springs. Correct height is critical for proper tire wear. Even when the numbers look good on the alignment computer there will be excessive tire wear when ride height is not right because the suspension parts will be in the wrong geometry.

Most importantly, Ford has way more trouble with steering and suspension parts separating leading to loss of control and crashes than all other manufacturers combined. Noises and handling problems must never be ignored. Those systems should be inspected once a year and when you notice anything unusual.