It is really great that Snopes was around in medieval times and can confirm or deny! /S
The thing is, no one knows what medieval peasants were doing, cos we weren't there. We have this or that piece of evidence, but evidence can be misinterpreted.
The majority of people today don't work as hard as the farmers of today. It is completely implausible that they work harder than the farmers of the middle ages, who almost certainly had to work harder than modern farmers (thanks to no mechanization).
We know enough facts to get a good picture even if we don't know exactly what they were doing\