I know a few folks in that situation - likely people who the originally designed fibre roll-out would have hit, but instead got a substandard connection.
I’m not so sure it’s a full death spiral though, one would hope that the fibre retrofit can catch a lot of these up.
Yeah, I should have said, I’m definitely not convinced of the narrative the article is selling. Like you say, as fibre is rolled out, people will come back to the NBN when they can get connections that are as fast (if not faster) and more reliable for cheaper. And the NBN is a government project, so they don’t have to worry about cash flow in the meantime.