If you have last mile fiber into your home, then you're capable if receiving 10Tbps. Yes a PON setup won't actually provide that, but they never state that someone would offer those speeds, only the theoretical last mile capacity.
The point of the article is to counter lobbyist claims that we don't need fibre investment because cable and 5g are fast enough. This article points out that even in their best case that is not true.
The Cable/Wireless carriers will use this misdetermination to undermine what these guys are saying so in the end its unhelpful.
They'd have a much better time pointing out that existing cableco's have mismanaged their DOCSIS networks and that Comcast is considered the WORST company in this country (even worse than Monsanto) because of how poorly they manage their networks. There's also so little adoption for "Wireless to the Home" that its pointless to consider that a reasonable option.
I can tell you this -> Any time anything network/internet infrastructure gets posted here on HN, its a mess. My friends in NANOG have stopped bothering.
This is almost as bad as "the internet is a series of tubes" to a network engineer...