In very early interviews Hussie said he kept all of Homestuck essentially in his head, without any planning documents. I have a pet theory that, because of the kickstarter and other life stuff, he lost his entire headspace "notes" and was never really able to fully put it back together
I remember seeing an interview where he said if he ever had to go on a long hiatus it would permanently throw him off and that sure happened.
Act 6 is where homestuck started falling apart undetmr the weight of itself imo. The formula HAD to change, if jt kept at the pace it had been going at it would still be going today, but i dont think hussie was a skilled enough writer to make that change smoothly
Yeah, he had to be more straightforward about some stuff to get the information out there (although sinking a bunch of time into Openbound for 12 mostly pointless characters was an Odd choice) but whether he pulled it off... I think it’s a matter of taste, but I do think act 6 is noticeably different stylistically from earlier acts, especially when reading archivally, and depending on what you liked about the early comic some of those elements may be missing later on.