Yes, you would probably find value in picking up coding skills. Foundational rather that practical as you're unlikely to deliver more value than someone who has dedicated 100% of their training and work experience to practical coding.
The new coding knowledge isn't going to be where you deliver value though. Most of the new value you create in yourself will be as "an experienced PM who also knows how to code", so start thinking about what kinds of opportunities might be a good fit for that future you. There will always be fewer people with your synergy of skills than there will be with experience in each individual skill domain you posses.
Yes, you would probably find value in picking up coding skills. Foundational rather that practical as you're unlikely to deliver more value than someone who has dedicated 100% of their training and work experience to practical coding.
The new coding knowledge isn't going to be where you deliver value though. Most of the new value you create in yourself will be as "an experienced PM who also knows how to code", so start thinking about what kinds of opportunities might be a good fit for that future you. There will always be fewer people with your synergy of skills than there will be with experience in each individual skill domain you posses.