I think I'll have to declare that as being not true. We live around 5.5km from our local exchange. The telephone line is actually 7.8km long (determined by an Openreach engineer pinging when checking faults in the past). The nearest fibre green box is 2.1miles away. We have been told (confirmed) by the PTB only one month ago that fibre will not find its way to our premises (R100 scheme in Scotland -
https://www.scotlandsuperfast.com/?). We have not been advised that the conventional line is to be removed at any point.
We have poor mobile phone coverage. We do use an external mobile aerial and router which, on a good day will give us 10Mb and also have a satellite dish which can give 35Mb. Tried VOIP (Vonage) and it wasn't overly successful so try to make all calls via Wi-Fi Calling over the iPhone.
The only 'reliable' system at the end of the day is the good old BT phone and line.
Regards
Richard