[vgb2k18]

If I'm reading this right, it means Shared Array Buffers can get enabled by sites that are not GitHub Pages, eg, by spinning up one's preferred cloud hosting instance (DO AWS Azure etc). If yes, then this appears in my mind as not a huge problem.

[rezonant]

Also at least for Chrome the limitations are delayed until Chrome 103 if I read this right. See update at the top of https://developer.chrome.com/blog/enabling-shared-array-buff...

Chrome stable is at 97 currently.