I recently started rereading Homestuck and, well... Is the Egbert family white-coded and mildly racist, or am I reading too much into things like the usage of "octoroon" and the adulation of admittedly racist figures? On a related note, did Hussie later retcon out-of-comic John's mention of the Striders being white, or am I imagining it?

There’s a lot of not so great language used in the first few acts, for example I know the r-word gets thrown around quite a bit. But as Hussie learned and grew so did his characters and such language is used less and less as the story goes on.

As for the Egberts being white-coded, I think you’re reading too much into it or are making presumptions, or maybe I’m not reading in to it enough (I typically take story beats and character traits at face value).

As for your other thing, I have a general rule about not discussing character race, but the bit you’re referring to is still in comic