>>>meteorologists, veterinarians, heavy equipment operators, heavy equipment mechanics, small engine mechanics, welders, plumbers, geologists
No (they let the weather predictions to the weather bureau, same as us). No (they hire vets). Yes (as if that's hard). Maybe (some fix their equipment but most hire mechanics). No, maybe, no (plowing the earth does not make you a geologist).
I worked on a farm. It doesn't take a high IQ. If it did, most of humanity would have starved during the last 10,000 years of agrarianism. It's actually very simple (though time intensive). Which is why they propose crockpot theories like "Windmills make un's sick! I've got lists I downloaded off the conspiracy sites."
Working on farm is like any other menial labor, but owning and successfully operating a farm (being a farmer, rather than a hired hand) sure as hell takes a brain: especially running a small farm.
You don't hire all your vet work done and turn a profit at the end of the year; most farmers will have refrigerators stocked full of different vaccines, antibiotics, etc., and self-treat animals most of the time.
Its also cute how you dismissed small mechanics like an ass. I'm sure you're thinking about a pull start lawnmower, but diagnosing the problem on a grain conveyor in a feedbunk setup or a blower on a silo is a giant pain and definitely takes knowhow. And as for large mechanics, again, you don't just "hire a mechanic" and stay in business. Repair bills can be five figures in labor for really nasty problems on big equipment.
You also sure as hell do learn how to weld, do plumbing (and might even own your own backhoe attachment to do real work), and definitely know more practical geology than an average person. Fertilizer is expensive, and modern farms do extensive ground sampling (an agronomist does the actual sampling and analysis) to generate soil maps. Because "fertilizer" is a general term for you stupid city folk (see, I can be a patronizing ass too! No real offence intended city folks, making a point), and in reality there are a whole host of mineral deficiencies that can undermine productivity. A single field might need several different minerals in different areas, which are applied selectively to save money and maximize yields.
Theres more than that, but I wont get into it. The point I'm making here is this: people like you are the reason there is such a blind hatred of "city dwellers" (a friend of mine uses the term “cidiot” to poke fun at my now city dwelling self) in a lot of rural areas. Your mix of casual arrogance and ignorance (just stick a seed in the ground and it grows, right? Cause it’s that easy, and agriculture today is so much like agriculture a thousand years ago) really turns people off, and makes them more dismissive of your advice on topics you might actually be qualified to comment on. Ever wondered why a fair amount of farmers are willing to marginalize and dismiss science, even when it seems like it shouldn’t be controversial? Because people have marginalized and dismissed rural people for decades, especially university educated people who really should know better.
By the way, while I'm mentioning it, the term "flyover states" has almost certainly been involved in the decline in the democratic party in the Midwest (The DFL used to be huge where I'm from, now it is really struggling). It doesn't even matter what the conservatives are selling, when a farmer listens to a bunch of ignorant bullshit followed by a "flyover state" crack from some Northeast moron they instantly get the urge to cast a fuck you vote for a Republican in a national race. A lot (most, it seems like, but thats anecdotal) of local governments in the Midwest are majority democrats. Food for thought.