> We decided to disable this deprecation temporarily (for 2 weeks, until August 15, 2021) to provide more time for websites to address the issues caused by this change, or enroll affected origins in the origin trial.
Most sites aren't even gonna find out about it in a two week period, let alone be able to fix it.
(Side note: Google has broken the text selection on this page, at least in Firefox. Didn't try in Chrome. Copy/pasting a paragraph was a trial.)