What a joke! Development plans are simply for management to document they have had a conversation and that they are using company training. The process has nothing to do with individual goals or personal career plans.
Your career goals can be achieved whether or not your manager helps you. You can help you. Go do it, my friend. You take it seriously. Don't wait for help or wait to get advice. If you want a career path, write it down and make phone calls. It works.