I mean there's nothing wrong with this. A solid wooden door is nearly the perfect desk size and width.
I feel like the OP was being a little too drastic, there are many reasons to dislike Amazon but one being that Bezos used a door as a table is a little out there.
I use a door as a desk at home. With some finishing it looks as good as a solid wooden desk, and its much sturdier and nicer feeling than a plastic desk, while being the same price.