I really don't think job security is paramount here in things to consider before investing into Bitcoin, because in life anything can happen, even the job you feel that is secure, they might just lay you off for no just reason, because life is unpredictable, and that is more of the reason why we should not play with our savings and emergency fund, because that is what going to keep you going till you get another job.
A job is definitely needed to keep bitcoin investment right, if you are out of a job then you can decide to sell your bitcoin holdings if you face any danger. So this is why the job is special, you can keep your investment active in the Bitcoin DCA method with a portion of the income from the job. There must be an external source of income to meet basic human needs. Bitcoin holdings would not be sustainable for long without eros.
Try to understand me correctly, I never said having a job is not an important factor in things to consider before venturing into Bitcoin investment, what I said was that, job security is not that paramount to things to consider before venturing into Bitcoin investment since we live in a world of uncertainty.
I believe that you are very aware that a man cannot do away with his job or business, because that is what put food on his table, so if he is being stop, like he was sack or his business is not profitable again, it going to affect every sector of his life, not just the Bitcoin investment, so a source of income is very important to keep up with the ability to not just to fund his DCA strategy, but also to put food on the table.