I know Wexford well and it’s a far nicer place to spend time since they restricted car access.
Indeed, when the North and South main streets had cars queing for "shopping" , the experience was, horrible and polution from exhaust terrible health wise. Today Wexford town is a thriving tourist town, and the pedestrianised Main St is very nice. One can park, and walk and yes, at Christmas time many a person can be seen humping boxes around to their cars, but at least away from the Main street.
Many cities in Europe steer cars away from the centre and in England Oxford city has no cars in the very centre. A similar arguement about the new motorways M8/M7 resulting in the death of towns like Cahir and Cashel turned out to be wide of the mark. One of the reasons for not planning for motorway service stations was to direct "passing" motorway traffic back into the towns that had been bypassed to help garages etc. NEedless to say common sense has now been applied and motorway service stations have been planned for, the business have re-invented themselves given time.
The bypassed towns of Macroom, Youghal and Croom Dugarvan are much much nicer places for their inhabitants than 20-30 years ago when they were very dirty depressing places. Not everything in a town or city is there for benefit of shops.
Of course there is a anti-car agenda. Its a 1-x equation, for too long x has been very small. For too long, DCC et al mistoke Dublin for Detroit and thought it was Motown. Except, of course we didnt get rich from manufacturing cars for a 100 yrs for most of the globe.
Dublin should be a placing for living, not just shopping. The city would be much safer if more people went there, rather than exiting as the night curfew draws in.