You can:
1. Dismiss it by believing the projections are very wrong and much too high
2. Think 20% of all energy consumed isn't that bad.
3. Find it concerning environmentally
All takes have some weight behind them in my opinion. I don't think this is a case of "arsenic-free cauliflower", maybe unless you claim #1, but that claim can't really invalidate the others on their rational, they make an assumption on the available data and reason of it, the data doesn't show ridiculously small numbers like it does in the cauliflower case.