Cheapest thing they can put together that's the easiest to make and sellable to the public at the highest profit margin possible.
And when it fails they want you to bring it back to THEM to fix.
I agree. I went to the owners manual to replace the headlight that was out. It said it was a dealer service to change the bulb. Turns out I had to take the grill out first, then the assembly. I changed all four bulbs, high and low beams, to avoid that headache again later.