The metaphors ('Hedgehogs' Vs. 'Foxes') and other such rhetorical devices do not matter at all, though a good metaphor may certainly make things appear more 'alive', interesting, and so on.
The 'core issues' are:
1. What, if anything, are the aims of the educational system as a whole, and of the 'math education system' as an important sub-systems within it?
2. How effective are the existing structures in those systems to enable accomplishment of those aims?
Anything that supports/enables clear understanding all round (by all stakeholders) of '1' and '2' and perhaps helps the accomplishment of the well-understood aims is worth trying out. IMHO, neither Liping Ma's nor Mark Saul's articles succeed in this.