LOL I did not click the links because I don't want to visit that site (and also have limited interest in what DHH says about Apple Intelligence — not none, but not enough to click it), but I am actually very curious as to why DHH (or anyone, but especially someone like him, with many other places to opine) would post his opinions on LinkedIn of all places...?

Can anybody square that circle?

It looks like he's posting on his blog and maybe it cross-posts to linkedin:

https://world.hey.com/dhh/apple-needs-a-new-asshole-in-charg...

https://world.hey.com/dhh/age-is-a-problem-at-apple-f7ae6eca

https://world.hey.com/dhh

He seems to be quite active on there. I think he also has a blog on hey.com but that's blocked at my employer as it's an email domain.

Oh, that blocking is most likely the reason, then, which does make sense. He posted a more complete version to hey.com:

https://world.hey.com/dhh/apple-does-ai-as-microsoft-did-mob...

Yes, I can't find the episode now, but on the 37signals podcast, Jason and DHH said that driving signups with public writing are part of their job that they owe to their employees, and that includes presence on places they don't really like such as Linkedin.