I think you may have missed the part in my original comment where I said He even says that it was bad for both sides!.

Respectfully, my point was that the way the author (you?) left that company reads like it was a train wreck. To a level that I wouldn't look to the author for any advice on how to leave a company.

And what was the advice? Don't sabotage the company and don't give 10 months notice? If ten thousand people quit a job, how many would even imagine doing either of those things?