It's not a show of courage to stay at a job you've committed to working, nor is it boot licking. It's plain and simple economic necessity and whether you like it or not you're going to end up working for someone else no matter what job you have, whether it's in healthcare, education, science, or even as an independent artist.
It IS weak and soft to quit a job just because it places demands on your time and expectations that you'll actually do the job during the required hours with the required professional attitude. You're most likely never going to find a job where you have total control, can come in whenever you want, do whatever you want, don't have to do anything to earn a paycheck.... that's a fantasy and not the reality of the world we live in.