The side effect of course, is to make housing even more unaffordable. We also have a group pushing for all new houses to have rainwater tanks (to which councils will have a field day charging annual inspection fees) made mandatory, along with solar panels for roofs etc.
A charger isn't that expensive. It's also cheaper and easier to put the 32A cabling in while the house is being built rather than having to do it post-build.
According to the electrical dealer I have an account with, the outlet, 32A cable, RSD, breaker, fittings, plus a small amount for labour adds up to several hundred more for the cost of the build. If it's made compulsory, add a small increase to the electrical certificate cost as well. That is now mounting up.
What purpose would compulsory chargers for all houses serve? Cars can be charged using the existing 10-15A electrical infrastructure in the house, and there are numerous fast-chargers available dotted around our cities and countryside.