Critics say it would deepen divides between urbanites and commuters
Yes it will, which is why Paris needs political unification. These policies only apply to the commune of Paris, while the rest (which is the majority of urban population) still suffers bad urbanism. The divide is exploited to drive a wedge and get anti-urbanist politicians elected in the rest of Ile de France.
Edit: for a clarification this is how the urban population of Greater Paris is divided
https://en.wikipedia.org/wiki/%C3%8Ele-de-France#Petite_Couronne