I used to eat them- and squid- regularly. Had a girlfriend from Italy, and another from Spain, so used to consume Mediterranean seafood regularly.
Comparing the intelligence of a chicken to that of an octopus is not what I would expect from you, sadly.
Man I hate to give you the wrong impression.
Believe me, I have always known how different and amazing octopuses are. Same with cuttlefish, squid, and even shelled primitive mollusks. I have a blown glass octopus and other octopus shit all over my house. I love em too.
I spend a lot of my free time out in the saltwater... fishing on top and spearfishing on the bottom. We only kill creatures we will eat. I look at things that live underwater as the most delicious food on earth. I have zero sensitivity to any creature that can breathe underwater.
I've shared my home with a parrot for way too many years. Call me a crazy bird person (cat lady crazy)... but birds are smarter than most have any idea about... and their emotional intellect too. Some more than others... but chickens are actually a trip and smart af. The old saying of "bird brain" meaning stupid has been proven to be stupid itself... science has discovered that their brains process things faster than ours in many ways. So I am serious in my belief that chickens (and many birds) are extremely underrated intelligence wise.
We've got a couple of saltwater aquariums in the house because of our love for, and fascination of, underwater life. Everyone in my immediate family shares in deciding what different creatures we keep in them. My sons and I have all gone back and forth about getting an octopus tank too. We have a strict rule about all creatures we keep though... you never give them a name. That's no joke either... name a fish and you've just cursed it to die. Some of the fish, inverts, and corals we keep aren't cheap... you learn not to name them or get attached to them fast in this hobby. No emotional attachment can be given to the creatures if you're really gonna enjoy the hobby as well.
So I'm admitting to being a mollusk/sea creature killer, keeper, and eater without any emotional attachment whatsoever... well, except for me wanting to know when I'm gonna get the next one. I eat a bird too, but I'd never be able to kill one. I've given my house to a parrot and I named him Rasta.
I gave it a little thought in other words.