Multiple derivatives of the same source video with different processing options isn’t really the same thing IMO.
It’s not quite the same, I agree, but multiple frame-complete releases (derivative of one source or not) into which people will want to mux a given audio or subtitle track will lead to the same requirement for synced versions of those tracks. And once frame-complete 4k versions of the OT are out, how many other projects will go to the trouble of dropping frames to maintain GOUT sync if they no longer need to (audio from those 4k versions being readily available)?
There’s also the fact that hairy_hen and schorman have moved in step with 4k83 and will presumably continue to do so. Their latest mixes (which, as I understand it, involve improvements) are synced to that. Will they make GOUT-synced versions for legacy reasons?