DarkOx has refuted many of your points already. I'd like to add a few comments.
I don't think it would be nearly as apocalyptic as you make out. We have more vulnerable technology now than in the mid-1800s, but we also have over a century of researching the problem and developing models to predict and mediate the effects. For example, when we know a CME is coming, we can disconnnect power-distribution systems from each other to make them less vulnerable. And we can design satellites to withstand all but the most severe charging events, and launch new ones with the infrastructure that would likely survive unaffected.
The effects of a Carrington-like event would be significant today, but unlikely something that threatens our survival as a species.