I considered getting my PE, but it's not needed in my line of work. I would consider making a complaint to the licensing board if someone tried to shut down my free speech rights with some kind of specious argument about licensing. You can't represent yourself as an engineer if you aren't licensed, but that doesn't mean you can't do a proper analysis. Plenty of unlicensed engineers are doing this kind of analysis and having their work signed off on by a licensed engineer.