>> Being a farmer isn't owning a farm
> Not according to the government.
Why would we care what they think? Depending on the government we're talking about, that could be an ignominious distinction. One government that comes to mind most recently focused its efforts on creating fake memes and myspace pages of political opponents, to troll them, while the same government failed to provide basic services to its people (and continues to do so).
Instead of asking the government what words mean (Orwell wrote on this idea), we can just ask the people what the words mean. And the people say that 'farmer' includes folks doing the actual cultivation, even if they don't own a thing.
> Why would we care what they think?
Well, with the exception of Hong Kong, which isn't exactly a farming mecca, Singapore, and Eswatini, all other English speaking countries are democratic. Which means that the government and the people are the very same thing, so when the people have decided that's what farmer is, that's what farmer is to basically everyone (there are always outliers who like to go against the grain, of course).
> we can just ask the people what the words mean.
There's an old saying: "Actions speak louder than words". People will make up bullshit if you ask them. More revealing is to look at how people actually use the word "farmer" in practice. And it turns out that we do — and then record that use in a book known as the dictionary. Like I said in an earlier comment, it echoes the same.
> And the people say that 'farmer' includes folks doing the actual cultivation
Sure. There are also people who use the word "farmer" to refer to someone who creates web/social media content. But these are outlier uses. Obviously all words have been made up on the spot, and can be made up on the spot (again) any time you so wish. You've not stumbled upon any kind of revelation there. But in going that way you've made it clear that you're not paying attention to the discussion that is taking place.