If AI were to not use so much energy, we would have a much easier time covering our need with green sources. Yes, we can probably also account for the additional use by AI, but it'll make an already existential challenge so much harder.
Regarding your last paragraph - AI is just the riders of the apocalypse. The doomsday cult is capitalism.
We've already proven we can build huge amounts of renewable generation if we want, the issue I see is that additional huge demands like AI prevent us from making carbon based generation redundant, lowest priority choice in the mix of sources or used exclusively for its strengths to respond quickly to changing needs.
If AI were to not use so much energy, we would have a much easier time covering our need with green sources. Yes, we can probably also account for the additional use by AI, but it'll make an already existential challenge so much harder.
Regarding your last paragraph - AI is just the riders of the apocalypse. The doomsday cult is capitalism.