Three counterpoints:

1) Kessler syndrome is a contingency.

2) This is a logistics issue, not a physical impossibility.

3) Those are different tradeoffs (solar in space). There is not really an argument there.

All in all this is extremely weak reasoning, which is quite the contrast with the definitive title.

I throw this to the "nerds need to feel smarter than Elon" pile of articles. :)