Real numbers and real complex plane don't compute. No matter how many axioms your mystical formalist makes up, real numbers don't compute, can't do arithmetic and hence can't form form a field. I'm sorry but I don't see the invisible clothes of your naked emperor. The invisible clothes made of non-demonstrable and non-computable "flowing points" of "real numbers" don't exist. Because they don't compute, they can't offer the continuity and causality that physicalism of point-reductionism claims and desires in it's futile, absurd and powerless attempt to argue against Zeno.
The truncated approximations do compute, because they are rational numbers. But because they are not the actual infinities, neither they can provide the desired continuity and causality of physicalism.
So what is the option that is left for point-reductionists? Theology. Actually I do agree that mathematics and theology can't be separated, but mysticism of "flowing points", "infinite sets", "substance" etc. incoherent mumbo jumbo computing beyond time and place, in some Eternal Platonia or what ever, sucks also as theology. By coherent and ethically sound theology I mean that we should not make mathematics into yet another mystical religion, that would be blasphemous against beauty, honesty and communicability of mathematics, the core values of constructing mathematical languages. Which as such are a continuous process withoug any "final truth" of a dead god of any static model forcing itself over process ontology and evolution of mathematics as living spirit.
***
As for Brouwer, I agree that his "solipsist" subjectivism would be insufficient, but since Brouwer intuitionism has been moving towards more cosmic and process philosophical idealist ontology.