>around 4 times less,

Does that mean 1/4 as much? You're implying that a 75% reduction isn't a HUGE difference? Maybe "minuscule" was a bit of an exaggeration, but not by much.

If we eliminate all rice farming (possibly the most widely consumed food in the world) what do we replace it with? Corn?

From the article: "rice contributes about 10% of emissions from the agriculture sector globally"

That sounds bad, right? But wait... "Rice paddies account for approximately 12% of the global croplands of the planet" -- https://www.researchgate.net/publication/255623930_Rice_in_the_Global_Food_Supply#:~:text=Rice%20paddies%20account%20for%20approximately,%5B4%5D.%20...

So, 12% of our food production results in 10% of our emissions. That seems like rice is a below average emitter of carbon.

Check my math please.