> many of these are in fact not a standard according to W3C and should not be implemented in any browser until it is.
That's not exactly how standards work. A browser (or anyone) comes up with a spec, a browser can ship it (to test the waters in an origin-trial, to gain traction if they believe in it), and the standard (often) comes after the fact:
"Working Groups don't gate what browsers ship, nor do they define what's useful or worthy. [...] In practice, they are thoughtful historians of recent design expeditions, critiquing, tweaking, then spreading the good news of proposals that already work through Web Standards ratified years after features first ship, serving to licence designs liberally to increase their spread."
That's not exactly how standards work. A browser (or anyone) comes up with a spec, a browser can ship it (to test the waters in an origin-trial, to gain traction if they believe in it), and the standard (often) comes after the fact:
"Working Groups don't gate what browsers ship, nor do they define what's useful or worthy. [...] In practice, they are thoughtful historians of recent design expeditions, critiquing, tweaking, then spreading the good news of proposals that already work through Web Standards ratified years after features first ship, serving to licence designs liberally to increase their spread."
https://infrequently.org/2025/09/standards-and-the-fall-of-i...