Explain. I have fiber to the door for everything. I saw nothing but improvements after switching to FIOS years ago.
Fiber to the door, for those lucky enough to have it available, usually does grant a quantum boost in quality. The appropriate comparison for most customers is with DSL, and either one compared to cable companies’ internet service depends on the router infrastructure. Cable companies claim to beat the pants off of DSL but that’s best-case. When all your cable neighbors are downloading, there’s a bottleneck at the router serving them all.
Oh, and what’s behind a DSLAM is usually fiber.