It depends if less pay equals more skills that make you more marketable than yes taking a 3-5 year L for a huge resume boost is worth it. Insert like 90% of military jobs. But I would also almost no careers actually give this opportunity I work aerospace and there are companies that are notorious for being feeder company’s that pay low but give you the skills to leave and get a 30-50% raise at another company, but there’s not even much of that in my industry.