Yes exactly how can you write an entire thing treating rationalism like something you can do an apostasy out of and never mention Yud once.
I assume the personal perspective is him tacitly admitting to being attracted to skepticism for the debate bro culture, especially the parts that bordered on harassment. Even the inciting incident of "leaving rationalism" is framed more as him growing out of the need to long-form debate someone, specifically James Damore, the google engineer who published a manifesto about how women don't belong in tech.
I don't know the author so I don't know if it is important that he was fine with pranking the timecube guy but decided enough is enough when it was time to take a pro-feminist side.