readers who make siscon gross when it was only for gag. it's not like imoucho a whole diff...

I dont know how you got more than 30 people agreeing with you but you're literally justifying siscon.
Just because it's meant to be a joke doesn't mean it's universally funny, this is literally a taboo subject, you're bound to see mixed reactions about him. Plus a joke shouldn't be repeatingly making people uncomfortable

Also your comparison is total bullshit, first of all it's because you're comparing a child to a literal grown adult and second of all that gag you're talking about is just part of Yuris character and not a mentality he just has.

And lastly, "it wasn't meant to be erotic" feels like you read every chapter he's in with your eyes closed because yuri is constantly blushing and literally bleed his nose out for Yor, just because Yuri hasn't done anything worse like as you said murdering Loid or kidnapping Yor doesn't mean his behavior was automatically alright.

Dude needs so much therapy, but because closest psychiatrist is Loid it means he'll never get help out of spite xD or maybe it's his future growth arc

i am bad at explaining stuff, and english isn't my first language. basically just read other explanation by others. but i doubt you actually care
just leave it at that

All their reasons are bullshit too, what they're in summary is..
Siscon is okay because Yuri had a reason to fall inlove with his sister because bla bla bla war shit bla bla bla! People need to understand Yuris character more bla bla bla!!

It doesn't change my point, Yuri is still a weird and disgusting character no matter how much past he has with Yor. As long as they're both siblings this'll be forever shitted on.