Not sure why they upgraded our upstream to DOCSIS 3.1 over 4 months ago (I think it is now) if they just plan to FTTP in months to come.
Everyone isn't moving over at once. People will be moved as they ask to be. VM may prompt them but won't compel them for years.
VM have tens of thousands probably more customers served by the Cambridge heasend and its hubs. That's a lot of truck rolls to install FTTP.
The HFC will be operating for years yet even in the very earliest areas to receive FTTP, and there are plenty with build underway and some areas where much of it is finished and awaiting key equipment install then it's good to go.
The HFC will still be maintained and still receive some upgrades just not costly spectrum upgrade. The decision between spectrum and FTTP was an either/or, not both.