The part I still don't get because I haven't seen it discussed so far is that their original patch mentionned they had been using a variant of the patch "for a

The part I still don't get because I haven't seen it discussed so far is that their original patch mentionned they had been using a variant of the patch "for a decade" but I never got why they didn't seek to get it merged upstream a decade ago. Or why they released "a variant" of their patch instead of the real thing to begin with.