Dedication really matters. Anyone can do trading but not all are capable of doing it.
Even leaving the job, its not an assurance that someone will have success in doing trades.
On that part of choosing trading crypto over a job, it needs a serious approach to decide what's the best thing to do.
I have a friend who is quitting his job so he can focus more on trading and he become successful and earn more than the salary from his previous job.
It was indeed a choice for everyone but make sure that we are already aware of the consequences. Might say that my friend is lucky in trading and he is destined to become a full-time trader but you are right, some people make mistakes in choosing to trade as they are incapable enough to do this and ended up losing their money.