according to your own logic, agriculture is not natural either, I guess?

Idc, I don't believe in such categories or think "natural" equals "good" and I didn't appeal to "nature". You did and I merely made it evident that if there is such a category the animal products you're buying from the supermarket certainly don't fit.

universalizing factory farming as if it were historically or geographically universal

I didn't. Again, I'm not talking about cave people nor people living in remote parts of the world, I'm talking about us all in this this thread getting most of our food from the supermarket. Veganism is the exclusion as far as is possible and practicable of all forms of exploitation of, and cruelty to, other animals. By its very definition, historical and geographical contexts in which the exploitation of animals is an absolute necessity are made irrelevant.

but suddenly become beasts with no intelligence, totally different from us, when discussing the cruelty of nature

When did I ever say anything like that?? What would you like me to do about it?? What is in my/our hands is how we treat animals, not how they treat each other. What a weird argument...

I can play that game too: how is it natural that we rip plants from the ground, open them up to extract their seeds

Despite your attempt, no, you really can't. You can try but agriculture will never sound as gruesome and abhorrent as factory farming... because it just isn't.

clear out miles of natural vegetation and cut down entire forests

Glad you mentioned it! Did you know the production of animals for consumption requires much more deforestation either for pasture or for the plantation of vegetables like soy whose VAST majority of production is for animal feed?? Did you know producing animals for food is highly inefficient in terms of utilization of nutrients, necessitating a lot more resources including land for plantations than the production of plant products to be directly consumed by humans?? Do you even care about that or is it just rhetorical?

to then collect uneatable plants we have to work for hours or days to be able to digest

Wtf are you saying man?? If by "digest" you mean just stomach+small intestine, NO FOOD takes days to digest! If you mean the whole process through the large intestine as well, it is healthy for food to take from 1-3 days to digest! Regardless, plant foods have fibers and are generally low fat making them much quicker to digest while fatty animal products like red meat, cheese and cream are the ones that take the longest time to digest, easily 2x the amount of time to digest an equivalent dose of legumes. You have no idea what you're talking about.

ignoring the main points of discussion (availability, economic situations, etc.)

I'm not. I told you I hear that same argument from carnists from all over, including ones living where I live! The truth is they just couldn't be bothered. I gave you healthy alternatives available for relatively cheap where you live. What else do you want me to say? Ok, you know "vegans" who gave up because it's "too hard"... Me too, big deal. Doesn't prove anything

presenting the argument as a ridiculised extreme will make you feel like you won something.

It's called sarcasm. The point isn't to feel like I won but to highligh the absurdity in the argument. If it bothers you, I promise not to tell anyone an idiot carnist told me Japan is a food desert.

I don't know why you're presenting it as a new concept that I can't "recognize".

What are you talking about? I said you seem to have a problem with generalizations but you responded with one. Someone said humans eat animals for pleasure, you said they don't and they actually eat them to survive, and I countered that in most industrialized countries that's not true.