Don't panic yet, more clarification needed ...
Maybe I'm an oddball here, but I don't believe a word in adverts or marketing. They can call their service Gerald for all I care.
What I do care about, is a requirement to be honest when answering a direct question upon which I will base my decision to buy (or not).
So the important question for me, is should I ask an ISP if their service is exclusively fibre from my house to the cabinet, and they reply "yes" and I then discover it isn't, that I have grounds to either sue. or leave the contract without penalty.
All else is frippery.