I'm not the OP, but I do eat meat and come from a farming family, and grew up with hens.
There's farming and there's farming.
The fell sheep where I grew up had nice lives, even if their lambs had short ones.
My uncle's beef cattle were well looked after, he opposed badger culls, and he suffered a mental breakdown during foot and mouth when his animals were, in his view, needlessly slaughtered.
The farmer whose land surrounded us, by no means a fluffy character, refused to allow the hunt on his land because they caused needless destruction, distressed his sheep, and if a fox needed sorting, he had a shotgun for that.
Our rescue hens were in an AWFUL state when we got them, and became productive layers after a bit of rehab and space.
I don't know enough about octopuses, or the proposed octopus farm, to know that there is a vast, VAST difference in farming methods. It really isn't as simple as "do you eat meat" in my opinion.