that’s a fantastic question. it depends on what you define as “active.”
I’d say the Coordinape probably gives a reasonable estimate of active contributors. Some people choose not to participate in the Coordinape, others miss the rounds, and some join the rounds when they really haven’t been contributing all that much.
According to this page, 252 people sent 3+ messages and/or spoke in the bDAO Discord last week.
So if you compare the survey respondents to this number, that would be a 72% response rate.