Is there something else that affects extract collection?

A while back I switched to a Grancathar, which does not have the extract boost skill. And indeed, my charged shots no longer collected three extracts. But after making my first artian glaive now it suddenly started gathering three extracts per charged shot again. As far as I know there aren't any gear skills that improve extract collection, but maybe that's not the case? Or do artians just... do that?

UPDATE: Just looked through my loadout again, turns out my equipped kinsect actually changed itself at some point. No secret tech here, I'm just dumb!