Since I've actually been able to witness all of this:
2005-2007: Source-based debating isn't yet the standard. Thus, people with basic knowledge of one era; be it KotOR, New Republic or Prequel Trilogy, assume that their era is the dominant one. The rise of Beefy, Advent(😊😉, Lightsnake, Gideon and more.
2008-2010: More posturing but sources begin to be used. Neph and the like rule the forums; Lightsnake and Beefy vanish with Gideon following suit; a new Sheev supporter TheTempest rises from the ashes. Someone called Kulvax mysteriously appears on another forum as Advent takes her last bow. Quanchi and Nai begin their perpetual reigns of terror.
2011-15:
A dark age of Bane wank reaching its pinnacle before a user named Carthage begins its downfall. ILS finally decides to get off his ass and be the only viable Maul debater. Ant and Skillz begin the TOR Wars. Trocity stays true to his name. A faction from the actual SWTOR forums crosses over as a Lady watches with great appeasement as a grand war begins. Selenial becomes the premiere KotOR II standard-bearer with ShootingNova as a new mysterious user named AncientPower appears. NewGuy begins the just rise of the Chosen One. LeGenDary debates begin; Skotia wank reaches its pinnacle and subsequent downfall. MythLord becomes the paragon all things PT.
2016-2018:
The Exar Kun war is waged. Ant's Revan wank reaches its zenith. Vader at an all-time low. ILS begins the era of Supreme Emperor Krayt, pays for it with his life. Azronger's insanity becomes irreversible. Skillz, Ant, AP and cult leader NewGuy claim indisputable supremacy of the Chosen One. The rise of SWTOR begins an unprecedented level of support against the Sheev slaves. Galan becomes the sole light in the darkness.
2019-
SWTOR begins the golden age of all KMC.