In general, it's not possible for machines to replace labor - this is the Luddite fallacy. If the machines do exactly what you ask them to do this becomes even more true, because labor has the comparative advantage that they'll do things you don't know to ask for.

It is possible for the labor to quit and find something better to do, as happened to elevator operators, but that's a good thing.

In the case of chess, AIs don't want money and Magnus does, so they're not going to help you find ways to get more of it.