Pinboard happens to be a web service run along the same principles as the article we're discussing.

The bus factor is high, but I suspect that Maciej has a plan that'll let us download our archive even if he does get grabbed by the mainland Chinese government let alone a forecasted going out of business action.

Then what do you propose the answer is? The blog post just proposes using “web things” differently

Pinboard is a profitable online equivalent to a mom and pop shop. It’s sustainable and its founder isn’t chasing growth at all costs. It also has a cult following, so OOB is highly unlikely.

It does not. See FAQ here: https://pinboard.in/upgrade/