Nope - 17 years ago, long before Chorus existed. I know they inherited the old gear.
Of course Spark say they will....
It's right there in the wording - "You've got a few options for getting fibre.... Some of these might not work at your home". In this particular case, taking out the copper cable and replacing it will not work at your home as Enable have no right of access over the Chorus duct to do so. If you were in an area serviced by Chorus fibre, this would most certainly be an option.
The screen grab above is necessarily generalised. To state what specific options are available in any given area would be so wordy and time consuming as to be ineffective. We can't even be specific about the greater Christchurch area as some subdivisions in Christchurch have been reticulated for fibre by Chorus through individual agreements with subdivision developers and therefore Chorus is the fibre provider in these limited areas of Christchurch. Unfortunately the OP's location is not one of these.