Like any other industry, I don't care what the electricity cost of data centres is if they create actual value. This is no different than a factory that makes car parts - you need energy to make stuff.
I think the part the bugs me is how over-hyped AI is, and there's a fear that all this electricity is being used as part of fundamentally unsustainable business models that will not prove sustainable long term. If that's the case, and we're overbuilding data centres what's going to happen to those buildings once the bubble pops?