
I kinda get what you mean but, there are smart people that even if they are super smart, they are kinda dumb and naive sometimes; and i think Abel is that kind of person. Plus he is always like that in the beginning, especially the one he tell the whole story to the council.
I think the reason why you think that Abel is dumber, is probably because he became blonde.

yeah but in the beginning i felt like he was faking how clueless he was!! he tricked everyone into thinking he was a dumbass when it was BS and he was actually really smart. but yeah very smart ppl can also be dumbasses haha like you're not wrong.
the way i laughed my ass off when i read this...god damn i can't believe i have something against blond ppl. i swear i'll do better LOOOL you're too funny bless you. i might be in love with you.
from the start Abel was incredibly smart but pretended to be dumb, so it does feel a bit off when he's being incredibly dumb right now xD
like he was so good at reading ppl and about reading the situation he's in, and pretending he's innocent and naive. so it feels off, because he's not pretending to be dumb, he's actually being incredibly clueless? which i get, like he was gone for 11 years...and maybe since the guy he got reincarnated into was very stupid that doesn't help him LOL
but how come he doesn't realize when everyone is being weird etc? like Abel you're so smart what's going on???
having said this i do love this a lot, and i love him. it's not even a criticism, i just miss how smart he can be. and i wanna see that again!!!!!!!! but also it is hilarious loool