I didn't say agriculture gave us leisure, I said it freed us up to do other things. You may spend less time hunting and gathering but everyone is a hunter and gatherer. With agriculture a smaller part of your society is dedicated to food production. This allows for specialization and civilization.
Leisure, as we understand it is a pretty modern development. In that study they are defining leisure as the opposite of labor. I wouldn't call that leisure personally. Partaking in or consuming entertainment and hobbies is leisure.
It would seem plausible to claim agriculture put demand on innovation; tools to make more efficient agriculture. Things like irrigation channels, planting tools, harvesting tools, etc.
Maybe technology developed for conflict came first but I’d guess peacetime uses also put demands on innovation.
Interestingly, I watched some video somewhere where in some part of India[1] there were people who were harvesting wheat with a curved knife (sickle) like implement rather than a scythe. So people had to bend down to harvest a field. Meaning sometimes technology doesn’t diffuse everywhere —even well known solutions.
Leisure, as we understand it is a pretty modern development. In that study they are defining leisure as the opposite of labor. I wouldn't call that leisure personally. Partaking in or consuming entertainment and hobbies is leisure.