@Niquarl This could very well be the case as there are economies of scale can to higher efficiency. In our case during the biggest surge of traffic our server was only at 30% capacity all the time. This means we could have shared the hardware with two other similarly designed popular websites..
However, for the project low-energy use was not the only goal. We also wanted to show how you could do this without the cloud, where hardware and material conditions are abstracted. How you could do it with a DIY solar setup etc..
It is like with the dithered images, it works for us and the design of our page. It might be less applicable to others. The same principles can be applied different in other use cases though.
Server run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!