To be fair, unlike others Horus doesn't have much left to call Seth out on, since most of the evil stuff Seth did, either:
1) happened before Horus was even born, or ...
2) has already been settled by him wrestling the kingship of Egypt from Seth, or...
3) is stuff that only a full-fledged god of Egypt can honestly call Seth out for, instead of a young demi-god who has yet to fully commit to fully receiving his godly responsibilities towards Egypt... (as a demi-god, most of the "duties" he has now are technically, mostly, symbolicgod, since he's still lacking his own pact with the world order, that all full-fledged gods are supposed to have).
(...And moreover, unlike other gods, Horus has wadjet, the eye of the sun, which is the highest prophetic instinct, so he, unlike others, he...)
4) probably knows there is a limit to what his mother Isis can claim that Seth "owes" her, anyway... given how she also failed to prevent stuff when she failed to help Seth even though she saw Osiris using Anubis as hostage to be able to force himself on her brother...
and...
5) Horus, unlike Nephthys, didn't (unwisely) give all his power to Seth, just so that Seth could solve the curse and save Anubis, ...only to see Seth waste precious time following some foreign dude in his search for Thoth's temple (where Seth did NOT try to ask Thouth about how to solve that darn curse)... and to see Seth come back to you with stupid inane question like "did you finally recover your memories of loving me?!?" instead of sharing important stuff like "hey, we need to find some other way to save Anubis now, because Osiris is forcing god Anubis to eat my side of the curse, hoping to sacrifice him instead of me!"
You know who still loves seth despite it all horus