Or we could always “force opt-in” for posts older than, say, 30 minutes? Same for “Share Always”: this is (obviously) meant for new posts only. You write a quick note, hit Publish, expect it to be shared nearly immediately. You’re going to edit it later, it will already have been shared, so no issue there. But it _would_ prevent accidental “mass shares.” And, although not without risk, we could consider an upper limit to “delayed sharing,” to avoid conflicts.

(https://bddz.be/yV4)

The bigger issue is obviously with “Always Share” (or the `*_enabled` filter used the same way) and posts created before that setting was set. You don’t wanna mass-update those. So we could either use a somewhat reasonable cut-off date, or simply ignore, e.g., posts over a day old (_and_ hang on to the 15- or 30-minute limit for “WP Admin posts”).

That’d probably avoid the worst mishaps and not confuse existing users too much.