I'm not about to go into a deep dive analysing the author's past writing style, but there is a clear difference just from glancing at the headers alone. Looking at older articles, such as this "featured" one[1], they all share a commonality: the headers are boring. Matter-of-fact. Plainly descriptive. "The reasoning". "The background". "The research".
[1] https://drobinin.com/posts/what-ive-learnt-after-sending-147...
Then a sudden spate of activity in late 2025 after years of not having written anything other than yearly recaps, and all of the new posts share a different commonality: the headers are 'creative'. "The Childhood Trauma". "Teaching a circle to care". "47 seconds: a villain origin story"[2]. "The uncomfortable engineering truth".
[2] https://drobinin.com/posts/how-i-accidentally-became-puregym...
It is quite a noticeable shift to go from always writing useful headers that clearly communicate the purpose of the following text, to always writing clickbait headers that try to hook the reader's emotional attention.