We currently have 82 career questions, over 60% of them got closed.
As career and professional-education are the tags with the highest ratio of closed questions, it seems to be unclear to askers what we expect from a good question about learning and working in the security field. Not all of them were poorly received but I suspect that even some better ones would today get closed as opinion-based or too broad rather quickly.
The tag guidance ("A career is a chosen occupation or profession..." - well, duh) also isn't incredibly helpful. I'd improve it myself but I'm unsure what actually makes a good career question, since career choices seem inherently opinion-based.