I disagree on this moderately.
Unless you take the risk, there is a low chance of escaping out of the drudgery. You play your cards well, and the maximum that can happen is that you will lose out on a job - and maybe 1 year savings (which you should keep before you start out on your own). Which can happen anyways in such a toxic atmosphere (as mentioned by the OP) anyways - the difference is that with entrepreneurship you have a chance of safety and even hitting it rich, while in the job, you have nothing.
I have tried to be an entrepreneur twice, both after I was middle aged, have a kid, with mortgage, both times failed, but still am in a better position (job wise, not financially) than what I would have been - had I been in a job. One thing I did was that I never took any loan to start the company - that would have messed me up though.
The biggest part of both the adventures was that it was fun - it was nerve wracking, extremely panicky at some times, had a bad temper - but in the end, it was fun. Daily job is no fun after some time - so I prefer this energy compared to the daily job. And now I have assets - the code and programs I wrote during this time is mine - and I always have a hope that I will be able to sell it some time - with a job - do we have any assets?
Anyways YMMV.