We will have to keep the temperature rise below 1.5 C, like it or not. Achieving this is not that hard, if we set ourselves to do it, and it will not make us destitute. That is just scaremongering nonsense. We can generate energy in a sustainable way, and at low cost (and certainly at lower cost than current fossil fuel prices).
On top of that, many processes have already become far more energy efficient than they were, and continue to become more energy efficient. Near zero energy homes are a real possibility in the Netherlands, and are rapidly becoming the norm for new housing. Many current electrical appliances only consume about a quarter of what they did a decade ago, thanks in part to EU regulations.
And as I wrote earlier, the price mechanism has a wonderful capacity to concentrate the mind. I just had a look at Dutch consumption of natural gas (within the country, so separate from changes in import and export). For the last five months this has been about 20% less than during the same period last year. I have not yet seen a detailed analysis, but I guess this is largely due to lower industrial and office energy consumption in response to higher prices. And this is only the beginning.