I guess this is the world we live in. My team has been working 14 hour days trying to test and ship hardware to customers while also growing the mining operations. I have been totally transparent in what is going on here as well as my plans and approach to dealing with challenges on multiple levels, while keeping it fair to the customers & investors.
In all other retail businesses, if a backordered situation exists, you will just wait.
On the other hand, you sold items and said they would be delivered in August, and it is now a third of the way through September, and some people haven't got them. It is reasonable of them to feel that you haven't delivered on your promises. Especially as you have diverted hardware that could have gone to them to another part of your business.
This isn't a backorder situation, where people are buying now and know the units aren't available, it was a preorder situation with a delivery promise.