So under this definition I too am a polymath but so are most of my colleagues. Some of the smartest engineers Ive ever met have wildly different hobbies outside of engineering or software. Boating. Baking. Triathlons. Music. But the most successful people do one thing, 100% in an all consuming way before flipping into another. Theyre the best bakers. Have sailed the furhest distances, written the best songs, and posted the best times.

Another way to think about it is “you can have anything you want, but not everything you want”. Choose accordingly.