I struggled to go through this entire story with an open mind because your logic does not make sense to me.

First, you point out that there is enough solar energy hitting Earth in one hour to power humanity for a year, and then you claim "The Second Law is the all-powerful (and extremely stingy) guardian of the energy abundance all around us"

Further, you omit to point out that the raw energy of the sun is pushed to us for free, donated, whereas the energy by extraction which is locked up in fuels including oil, is only available by the work of extraction.

Claiming that the all powerful energy authority of nature is somehow stingy, despite it delivering more raw energy than we could ever need, practically forever, for free, is strange logic to me.

For example, how can the evidence of a country gaining more than eight times its grid capacity in solar energy collection capability in only 18 months or so be ignored?

Just look at the example of Vietnam. That single example alone proves the statement that solar energy is "Not strong enough", or "Too diffuse", to be able to sustain us, false.

To me, the base law we should recognise and set in stone is this:

Nature is the grand authority, energy is her currency. The only issuer and enforcer of it is the sun, which issues it to all things for free. We have to learn to use that freely issued currency, or burn.

Personally I believe we will easily do not only that, but by doing it, we will prosper in an infinity of ways we struggle to imagine by extraction.

False belief, based on strange logic, is the only thing standing between us, and practically infinite wealth, it seems to me.