Another thing, I appreciate the author's honesty but will admitting that he quit on the company/investors hurt his chances of getting any sort of consideration in the future and a founder of another startup?
It won't hurt his chances at all. Startups fail, VCs know this.
As an example, I was in YC W10 with Thomas' batch, and failed/quit my startup over 3 years ago. I found no problem raising money again: http://techcrunch.com/2013/02/25/circleci-raises-1-5m-from-e.... I suspect it will be easier for Thomas since he has more personal relationships with investors than I did when I started to raise 18 months ago.
Maybe it's a January (new year and all that) thing?
We had founder issues early on and we parted ways after we shut down the first product. I then led the company to ship second and third products as a solo founder. I could have quitted then but stuck on for another two years. I wasn't ashamed telling people the truth because I know I have given my best.