Not really. Industrialization results in mostly increases in CO2. The main greenhouse gas in the "early global warming" theory is methane, which is a far more powerful "warming" gas than CO2.
Current atmospheric CH4 accounts for 25% of current warming enhancement.
I'm going to make a wild guess and say that we are still creating more CH4 today (with a population of 5 billion +) than we were 8,000 years ago with a total population of between 5 and 10 million.
The amount of land diverted to agricultural use from roughly 8000 BC to 1000 AD must be tiny by today's standards. I would wager that the landfills in the US alone produce more CH4 than all human activities of the newly agrarian world.
If our total current methane/greenhouse enhancement accounts for about a quarter of one degree celsius, than we must assume that the simple and primitive agricultural doings of about 10 million people account for a methane output 8 times greater than of today.
Yes-- methane is a more potent greenhouse gas, but the numbers don't pass the smell test, so to speak. I want cooroboration.
Big Time.