also the other one, where this feature gets lacklustre uptake but not enough to kill it, and then it just gets sorta shoved into a side panel, and then every so often it's turned on by default again because someone updated the config/prefs code or some other banal-but-instantly-effective reason (presuming it's not even intentionally turned on again by adding new default-on settings for "different" uses-that-to-build features)