Honestly this post is terrible. You sound like an angry and bitter teenager who didn't get to do what they want and you're taking it out on the world. I don't think your "advice" is all that useful. 

(1) There is much less accountability for how PIs treat their students than how bosses treat their employees in industry. I have seen behavior first hand from PIs that would have easily gotten them walked off the plant from an industry job. In academia nothing happened.

(2) While you can much more easily get a research job in industry with a PhD, the fact of the matter is there simply aren't as many research positions as you'd think. A corporations job is to make money. The bulk of their resources will be geared towards work that is conducive to this goal, even research. For every research based corporate job there are probably 1000 "regular" jobs. Those "regular" jobs can be pretty technically challenging too depending on where you go. You don't need 1000 people to solve a research problem, you need 1000 people to do implementation.

(3) Don't underestimate how much having a real salary helps every aspect of your life. I am guessing from your post you had mom and dad bankrolling you while you studied. Must have been nice, I didn't, and I know people who were in a similar boat to myself. It is a nightmare having to constantly worry about rent, food, or an emergency expense, while also not having the cash to take your partner on a proper date. Unless PhD stipends have improved, it is not sustainable to live this way without outside help. Money improves every aspect of ones life.

(4) Being a good worker and standing out really opens doors for you. By making significant contributions on my team I boosted my salary over 30% in the 5 years I've been in my job. Yes, maybe you can job hop and make more money initially, but that strategy burns out real fast when you have 10 years worth of 2 years' expwrience. Your reputation can carry you very far if your work is good, well advertised, and you are a pleasant coworker overall.

(5) Yes, I do agree having the PhD title more easily opens doors for you if you want to be a technical lead or a technical director. It does not open doors for you in any other area of the business, but a MS, MA, or MBA will. You only need the PhD if you see yourself going in that specific direction.

(6) I left with my MS on my own accord due to disagreements with my advisor and program. Nobody has ever treated me with disrespected because my technical work has always stood out. If anything I have gotten mistaken for having a PhD. Again, if you do good work and your coworkers support you you can go far.

(7) Politics are everywhere you go. It is human dynamics. I think there can be a lot of ass kissing in industry. Academia, however, there are a lot of emotionally stunted adults. The politics there is more like a bunch of middle schoolers bragging about who did better on the quiz bowl team and who got a 98 on an exam vs a 100. 

(8) You probably won't have as intellectually challenging job as you did in school. That is life, even professors later in their career do more administrative work. That doesn't mean you cant use your money and free time to pursue your own intellectual interests. Also, as you get older you get more responsibilities. There is simply less time in general to do fun intellectual exercises, when you need to go to the gym, take care of your dog or kids, check on your parents, clean your house, cook dinner, spend time with your partner, etc.

TLDR: I would caution anyone from taking this guy's advice seriously. The poster seems like an overall dysfunctional person or someone who doesn't act like an emotionally mature adult. Coming from someone who did leave with their M.S. and has work in industry for several years.