Interesting choice of counterexample, since agriculture is one of the most politicised industries in the world:
For instance, the U.S. government has manipulated the price of corn so much that it's now essentially owned by the American taxpayer, with the nation's largest producers netting tens of billions of dollars in subsidy payments annually. This is a political issue. That money could be spent on public infrastructure, education, or healthcare, but it's tied up in this industry which regularly and repeatedly lobbies Congress.
To any possible example I give, your thought will suggest it's one of the most politicised things in the world. Because the purpose is to say everything is political. Hence the title of your article.
The argument tries to prove it by itself, which I don't consider a reasonable position, at least not if we're pursuing the truth, as opposed to pursue the imposition of beliefs.
As I said, this is the same avenue used by draconian episodes in the human history, such as the "Holy Inquisition".
The production and distribution of corn may be controlled by governmental organizations, but that doesn't make corn a political character. Tech companies may be political actors, but not code. They can use code for their shady political purposes, just as cars are used by bank robbers. But we don't go out saying that "cars are bank-robbing tools".
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.