I've got a weird relationship with market socialists because I generally think they're much more sensible and convincing than the average "destroy evil and create utopia" socialists, but ultimately it's hard to understand whether their efforts to rebuild society would yield much better outcomes compared to European style welfare capitalism with more taxation and welfare spending.

I suppose they're trying to build a grand theory of social market economies / social democracy, which is nice.

saying the problem is capitalism is basically a non-answer to me.

anything that exists today can be called capitalism, nobody has a clear definition of what is constitutive and it is not a useful diagnosis for offering prescriptions on how to make it better