Hi Roger, thank you for expressing your concerns regarding the way early Quaker events were recorded and how that can lead to inaccurate date being recorded for birth, marriage, and death locations. It makes perfect sense when thought about, though I'm sure the subtleties are missed by those unfamiliar with the records.
I'm not sure, however, which "requirements of the Quakers Project" you are referring to. The project has a goal to have well sourced profiles but there is no requirement for any data fields to be complete. WikiTree as a whole has a requirement that at least one date be filled in but that can be qualified with the radio buttons for before, after, uncertain/approximate, etc.
Is there something specific about the Quakers Project and or current challenge that I should be looking at? Feel free to send me a message via my profile if you would rather discuss this privately.
Debi - Quakers Project co-leader and challenge facilitator