You need to re-read the email.  If everyone requests a refund, then all batches will be refunded.  "We will process any orders for those that wish to continue with assembly, and our policy of not forcing anyone to accept a refund still stands."  This is a group buy, by participating you need to accept that you're somewhat bound by the decisions of the group.

I think from his email it is clear he is recommending we ask for refunds (as he has for his chips).