I actually did answer, but I’ll repeat:
Eating outside the Sukkah on Shmini Ateres is indeed k’neged Halacha.
Saying Davka to sleep outside of the Sukkah on Succos is not merely k’neged Halacha; it is backwards.
You’re just repeating your point but not explaining. Just because I obey my Rebbe when I don’t understand, it doesn’t mean I obey YOU without understanding.
Why is one minhag against halacha while the other is backwards? And why do you only attack those who are “backwards” but not those who are going against halacha?
The only difference I spotted between how you portrayed both minhagim is that you only put the word “davka” in the second minhag. But we know full well that many chassidim DAVKA eat outside the Sukkah on Shemini Atzeres because that is their minhag. Eating INSIDE the Sukkah would be violating their minhag.
Why is this minhag less “backwards” in your mind than the minhag of sleeping outside the Sukkah?
It’s backwards because it takes a mizvah and makes it k’ilu it’s chas v’shalom an aveirah
Just like many consider it an “aveira” (i.e. against their minhag) to eat in the Sukkah on Shemini Atzeres and light Menorah outside the front door. Doesn’t that sound just as backwards, if not more?
I honestly think my argument is quite simple and clear, and I’m surprised that I can’t get a simple explanation of why the Chabad minhag is bad but the other minhagim are good.