I feel like 'polymath' is similar to 'philosopher' in that it's best used to describe someone who is dead. Someone living claiming such a title is almost assuredly a narcissist.

I agree with you though. Specialization is what we are pressured to do, but it doesn't give me much satisfaction. There's so much to learn and to do. I'd rather be someone with a hundred hobbies or side adventures than someone who only knows and thinks about one topic.