Sheep has edited episodes to account for retcons in the past. For example, the original version of Apotheosis (episode 41) originally stated that Theos gained a new magic, Magma, in an already-open mind, where his Phoenix Magic was, causing the two to fuse into Arcturus Magic, a rare mutation. Then rare mutations were retconned, and the episode was changed to now state that Theos mutated his third mind into Arcturus, with no mention of fusion or anything like that.
However, with how many times Durza and Alalea are mentioned, it would be hellish for Sheep to go back and edit everything. Probably not worth it. The webcomic has always been full of inaccuracies (like the killers of the Patch Pirates being the AG instead of a random pirate crew like the lore doc says it was), but that doesn’t make the comic any worse. It’s still a good story and these tiny name changes don’t affect anything so it wouldn’t even be worth fixing imo