Many other types of governance was enabled by the agricultural revolution, not just feudalism.

Toiling peasants had more free time than we do today.

As I understand it, this is largely inaccurate. People just read "days off" as "more time", even though peasant farmers would need to engage in a lot of labor around the farm or household even on "days off" (your cows and chickens don't care that you're on vacation).

Of course people still do some chores today even on days off, but it's a lot less than you need to do on a farm, ask basically any farmer.

Hunter gatherers had more leisure than farming peasants. Surely, one can spot the trend.

The amount of toiling they could do without dying was calorically limited. Having lethargy induced by a shortage of food doesn’t necessarily mean a preferable lifestyle.

[citation needed]

"Who's going to teach those idle medieval peasants to read, Ben? Augustine-man?!"

Pfft, disagree. Got laid off a year ago and have had nearly 100% free time since