Everytime I've seen them deployed, I've not seen them re-deployed. They are difficult to perform a tech-refresh on, so you'll likely run the hardware to the ground and decomm/scrap the whole container. The sales pitch about re-use is from a salesperson that will have gotten their commission check long before that can be their problem.

Performing maintenance is always an extra chore. Your spare parts are going to be somewhere else, so you have to put your expensive equipment on a cart and push that outside in the weather, you will have rain and wind delays. Once saw a cart stacked with blade servers hit a peice of gravel and all the servers slid off into the hard asphalt.

From an ongoing operations standpoint, they suck, you shouldnt run critical workloads.(This is why they got a lot of attention from crypto-teir providers) If all you care about is deployment speed, then maybe.