how did it confirm that pre-retcon aradia/sollux were around? they werent retconned at all, so wouldnt it just be aradia and sollux?

At the beginning of [s] Collide we see Aradia with a Sollux wearing two eyepatches which means he’s 100% alive, this is the pair form pre-retcon.

While in the Vriskagram flash we see an Aradia and a half-dead Sollux which is post-retcon. There fore there are two of each.