But the proper argument would require much more examples, and much defining of what a Chesterton Fence is.
Indeed. Your examples seem to be simply changes. Not every change is a fence, and for that matter, not every taking down of a fence is done because no-one thought for five minutes about why it was there. All of those examples were intensively discussed at the time, and those opposed spoke at great length about why it was there. In particular, extending the franchise, in the UK, was a process whose major part extended across nearly a century, step by step from the 1832 Reform Act to women getting equal voting rights in 1928.
Indeed. Your examples seem to be simply changes. Not every change is a fence, and for that matter, not every taking down of a fence is done because no-one thought for five minutes about why it was there. All of those examples were intensively discussed at the time, and those opposed spoke at great length about why it was there. In particular, extending the franchise, in the UK, was a process whose major part extended across nearly a century, step by step from the 1832 Reform Act to women getting equal voting rights in 1928.