That might be because Isis is a character that is, somewhat understandably a lot harder to understand, given the way she often puts on an aggressive act to hide her own self doubts (the infamous "technical" victim blaming she says to Seth in chapter 46, "If you had truly thought of me as your companion, you wouldn't have given your body to Osiris, you would've come to me and asked for help", being one of the times her words made it the hardest for readers to be able to readily pick a side). That's sort of identical to what happens with Seth as a character: the story strives to equally show you both their best and their worst sides, in order to turn him into an ambiguous character and make, so that while at times you as the reader are able to be fully on Seth's side, other times you will feel some reservations. That is something that I'm willing to bet was the author's deliberate choice, and unlike with those two, is something that almost NEVER happens with Horus (except for the few times when he gets rough with Anubis) because Horus is portrayed as a mostly straightforward character.
anonymous
https://tenor.com/view/he-aintlyin-preach-truth-facts-tho-gif-15825744
thanks
(๑•ㅂ•)و✧

Hmmm it's really curious. When people spread misinformation and pure lies about Horus, everyone screams bloody murder and runs to correct them. But it's not the same case with other characters, especially Isis ;").