On 1.: Birth rates are stable since about 1990 and declining since 2017: https://ourworldindata.org/grapher/annual-number-of-births-b... China had almost 30 million births in 1963, but only had 10 million last year.

The rate of population growth is decreasing much more quickly than expected: https://ourworldindata.org/grapher/population-growth-the-ann...

On 3.: In Germany the share of wind/solar in electricity production is more than 37%. How is this unproven? Supply is getting more stable almost every year: https://www.bundesnetzagentur.de/DE/Fachthemen/Elektrizitaet... Nobody is shutting off energy. And the EU has subventions for personally owned vehicles trying to increase their usage: https://ecf.com/news-and-events/news/money-bikes-financial-i...