If they were breaking out the heavy equipment and actually changing the infrastructure they would be trumpeting it as an infrastructure initiative, urban makeover/revitalization or something like that.

To assume that this is more than a simple regulatory change is to assume that the Paris government is wholly staffed with people too stupid to capitalize politically on a major infrastructure change.

They are messaging this as a regulatory change and talking about how they're adding bike lanes (already rolling out steadily for a long time as roads get repainted and resurfaced) and continued phase out of cars from the city center.

Nothing will change, because nothing is changing. All the stuff they're talking about is stuff they're already doing. They're just changing some signs in other parts of the city as well as though that's expected to change anything (which it's not).