Exactly, the dependence on a job only is dangerous, as it is difficult to regulate. Having the opportunity to make your own business or to invest on a regular basis provides actual financial freedom. Savings are a bridge between short term security and long term stability and Bitcoin fits in that strategy. The Bitcoin has demonstrated that it can retain and even increase wealth to its holders across market periods unlike regular savings which are eroded by inflation.
If one only depends on a job, one can never achieve financial independence, one must think of alternatives. Moreover, a person cannot work for the rest of his life. If he cannot choose the right platform for his financial security at the right time, then his future financial security is uncertain.
Most times it's isn't about the job, but the level of discretionary income coming from it. If you've a good discretionary income coming from your job, then you're fine and you can attempt achieving financial independence by going long-term investing into Bitcoin. Setting up a business isn't bad at all
but selling your Bitcoin or stopping your regular buys for it is bad, you can still save up for it alongside your accumulating Bitcoin. The good thing about having a successful business alongside accumulating Bitcoin is that it can help you hold for longer. Jobs may not be guaranteed and if you've your own business that's successful, it serves as a major backup in the case of job loss and also double cast as a source of increased discretionary income to invest into Bitcoin in the long-run. The most important thing is to ensure that developing your business doesn't interfere with your consistency in accumulating Bitcoin.