In NZ, landlines are also on their way out.
It's not quite unsupported, but you can't sign up for a new copper landline plan unless there is no mobile coverage and no fibre coverage at your property. Otherwise, for anyone who really wants a "landline" you are getting VOIP over fibre or VOIP over mobile broadband.
87% of population have access to the new fibre network, and the old copper network is just redundant and unmantained in most built-up areas. Chorus recent started actively forcing remaining customers off it in some areas.
Personally, I've been without a landline for 10 years, and even my parents got rid of their landline a few years back. It's just cheaper to use a mobile phones instead (and in NZ, mobile phones come with the additional benefit of never receiving spam calls)