One of the problems that capitalism claims to solve is the problem of who gets more. With antiwork, if for example we have a universal basic income, and everyone lives off of that, if someone wants more (more space, better food …) what mechanism decides who gets more? IMO this is important and needs to be solved or the idea of antiwork will die under the weight of the human drive to power.
With capitalism there is a mechanism, it’s unfair, easily co-opted and depends on poverty… but it exists. How will antiwork do better, because it has to.