I qualified with "technically-inclined". You can't avoid seeing stories like this (about Apple and Google) on a monthly basis if you read tech websites. It is a known risk, which needs to be managed. Failing to manage it to this extent, while also writing tech books, is just baffling.

Apple is clearly in the wrong, and I'm certain that there are thousands of similar cases that are less public. The author is one of the best-positioned people to know and understand that. I'm sure they'll also get their account back, unlike many others.

(I can empathize with the difficult decision they'll face after that: do they continue to promote Apple, or try to reinvent their career somehow?)

"Looking out for each other", in this case, implies telling the people you care about to have backups, and helping them set up. I do that, a lot. I'd try to also help with this plea, if I had any pull with Apple.

I don't understand the sections of your comment with the word "supposed" in them. Supposed by who, and on what basis? What paid-for service are Apple not delivering? I assume they don't charge the author anymore.