Earlier quoted context omitted.
> The interaction with the galactic current sheet will cause a "micronova" event on the Sun, leading to massive solar eruptions and disruptions to the Earth's systems. This sounds completely implausible.
As compared to the galaxy magnetic field inducing change on the Earth's? The entire thing is ridiculous. Oh, and that 12k year "geological cycle" (AKA random fluctuations that somebody got famous for mischaracterizing) is the weakest one without any visible consequences. The larger ones are much more interesting.
That's equally ludicrous, yes. I didn't read beyond those two.