Comment by eyelidlessness

Guillermo (Twitter OP) replied in the thread saying it will be server rendered. Other replies point out it’s not enabled for all users, so this (and presumably the UI changes it brings with it) isn’t final. I do see the changes, but I also opt into most if not all preview features and I wouldn’t mind if I’m part of an A/B test or whatever.

I wouldn’t be so paranoid to think this is some nefarious plot, it’s probably just incomplete. Whatever their “lock in” strategy, it’s more about building and extending a feature moat that users don’t want to leave than restrictive dark patterns. Harming searchability is more damaging to GitHub (which thrives on being highly ranked in Google/etc searches) than it could possibly be to would-be defectors who are almost certainly capable of using their API either directly or by using any number of tools to do that for them. If anything, shipping this widely as-is would probably drive users away not lock them in.

Judging by the timing of adoption of React/Next for their Blocks landing page (also mentioned in the Twitter replies), I wouldn’t be surprised if this is intended to be rolled out alongside further stabilization of React Server Components, or otherwise integrated with existing internal SSR implementation. (Leaning towards the former given it’s a Vercel person speaking confidently about GH’s plans for server rendering)