I can't back that.
3 moves. 3 installs. 3rd install was to a house that already had FIOS (moved in with a friend, he's already got FIOS, I wanted my own link) and never had an issue. I use my own router (Routerboard running Mikrotik) and don't have any issues. Speed has actually been slightly better than what they're claiming to provide (when they "matched upload to download" I tested out having more UP than DOWN) and with the exception of their hardware upgrades for their "Quantum" speeds, no noted outages.
7 years so far, been worth the penny.