Agree, working at a McDonald's today is not about the "work". It's about the pay and the ability to live the lifestyle that job would afford. Which is not something either candidate would ever experience, after todays wages, cost of living, and inflation is factored in.
However, Harris probably has an idea of what that life would be like and has the ability to empathise. Where as Trump will just use the photo op as a way to get free McDonald's
I think one of the two most beneficial things that could be done for America would be to enact a proper living wage that is in line with inflation. Not only would that help the minimum wage workers but it would also increase tax revenue.
However the best way to increase the tax revenue would be to tax the rich. Either way, Trump would definitely not do either.