This quote is from page 2 of the article. It is common for certain HN commenters to remind us that HN is a bubble. True. However, the author of this article is not necessarily in this bubble.
But, honestly, what difference does it make whether HN is a bubble or not. Google is a bubble. The Register, another entity outside the HN bubble, calls Google "The Chocolate Factory".^1 Does it matter that Google is a bubble.
1. Of course it's also common for certain HN commenters to try to broadly dismiss all journalism, on a news aggregator site no less. Maybe there is a pattern here.
Would anyone outside the HN bubble try to discredit the observations about so-called "tech" companies mabe by those inside it. (Besides those with vested interests in so-called "tech" companies.) All evidence I've seen since 2009 points to the contrary.