Is abandoning my PhD degree better for my career path?
Your argument for abandoning your PhD hinges on a few false premises.

P1) You will wear the mark of your PhD for your whole life. 

That is not true. A PhD is, in principle, a degree given to someone capable of independent research. Whilst you do your PhD you may be associated with your supervisors. That's because you're a minnow in the sea and it is the easiest way for someone to know whether you are worth talking to (sorry about that). After your PhD, people will rarely if ever ask that. I say that as a postdoc.

P2) You will exchange your dignity for money if you renew your contract. WHAT? That's something internal to you, an external observer is unlikely to see it that way.

Moreover, if you do not intend to do a postdoc, none of these points you made will apply to industry people. They will just see that you have a PhD and they will think that's worth something.