I kinda accepted the story as quasi-canonical for awhile there – at least the idea of the humans of the GFFA being the descendants of fugitives from the Earth of THX 1138– but I’ve since lost interest in the idea of the humans of the SW Galaxy being an offshoot of Terrans.
Nowadays, I prefer to run with a somewhat different idea: that Coruscant was a duplicate Earth – ala Miri’s world from Star Trek – a long, long time before it became a city planet.