Look at your own graph.
Hunter-gatherers need a very large area, per person, to get enough food from a given territory.
When you introduce agriculture, the carrying capacity per square mile goes up significantly. It goes up further when you domesticate oxen and horses to pull the plow.
When you introduce pesticides to kill insects, and herbicides to kill weeds, your crop yield goes up still further.
It is only in modern times that we've gotten the agricultural technology to enable feeding 6 billion people.
I don’t believe the first part of that graph. And that graph only goes back to 10,000 BC.
What that graph is missing, is the population growth from 6000BC to 4000BC that was wiped completely wiped out by the flood. So you had a reset to just 6 people at the time of Noah’s flood.
I don’t think it’s believable that man was smart enough to create tools 200,000 years ago, but couldn’t figure out that plants came from seeds, and planting a few could boost their gathering results.
It doesn’t make sense.
Scripture records that Abel was shepherd and Cain was a farmer. It took less than one generation from the start for man to figure out both of these processes. And that’s a more believable scenario.