It’s for the other wealthy assholes who have never worked at McDonalds (or any other working-class job) and are so out of touch they think this is good outreach to the poors, showing Trump as a relatable everyman. They have no awareness of how much he just looked like a rich asshole who has never done any real work in his life, showing up to work an average job for a couple hours during the slow part of the day and walking away with a warped view of what it’s like to be working class.