You should try reading the article. They specifically state that they re-use components whenever possible, and they regularly service their ladders to keep them in good condition. Aluminum ladders only have a 7-8 year lifespan vs some of the ladders they use going on 60 years before being taken out of commission.

I don't just mean wasteful in terms of materials, but also in terms of man-hours, equipment needing to be owned and maintained. Once all factors for the total cost of ownership are taken in to account I highly doesn't it's efficient. It's like everyone growing their own vegetables.

I say the same thing about crypto!

cryptography != blockchain services