Mod has asked me to “Please continue any conversation in the linked thread so as to keep everything in one place.”
So an update for all of you still following this topic: yesterday at Gamescom within a few minutes Randy Varnell (the Managing Producer of Narrative for Gearbox) called FL4K a ‘he’/‘his’/‘him’ FIVE TIMES during the Gamescom Xbox Live presentation.
He then continues talking about ‘he’, ‘him’ and ‘his skills’ multiple times, so it’s likely that they changed the canon, so FL4K is now correctly referred to as a masculine character.
https://youtu.be/raKNgx3jM4E?t=2679 timestamp is 44:39 for those on mobile.
This means that anyone using the old/incorrect pronouns (they/their) should now take care to use the correct pronouns (he/his) for this masculine looking/sounding/acting robot.