this arc had a lot of asspulls and deus ex machinas
also i dont like the pacing at all, they skip 4 months in 1 episode and the last 8 episodes are like 2 hours of real time
and i have never liked how everyone needs a backstory. nobody cares about these demons lol stop telling me about them
i liked that they put kujou karen into demon slayer and it was better than mugen train for sure but dunno
i guess demon slayer is just a bad manga so there isnt much for the anime to improve