did we read the same manga?? coro literally didn't have control over himself and went "demonic" or so his brother said. he didn't "leave" Yurito and his child with his brother, they forcefully took him away. and no one should blame Yurito for trying to save his child but there should be some awareness about the situation as Coro literally told him not to trust his brother (although it could be misunderstood since he was shouting and out of control). so while i agree with you that no one should blame Yurito, i disagree with you on the point (very important point too) that Coro just "left" his family as his he wasn't put to sleep and (technically) kidnapped.
I can agree with many points you made and I'll admit that I regret using "left him" as my choice of words as that wasn't in coro's control he HAD to be seprerated but what I do not regret is calling coro immature because that is what ultimately led to him being demonic. actually typing this out now I should've said jealousy rather than immature but then again the way he handled that jealousy was immature. And looking back and seeing how he was raised him being easily jealous and handling it in an immature way is actually fitting for his character especially when we see their first interaction and his interaction with gramps
As much as this manga frustrates me sm if I see one person hating on the mc TRUST you will find me in the reply section defending him. out if everyone's he is the main victim. his husband is immature and left him and their kid alone with his brother knowing full when that the mc needs him to feed their child and knowing his brother cannot be trusted. the mc had the appropriate response to everyone make sure his child survives first and foremost then look for his husband