No they are not real polymaths are incredibly rare and don't fit the mould that rote learning and getting a 4.0.
They only one close to a real polymath I know started a company when young sold it out for $$ at a young age then decided to get a Phd in music - after a bad accident whist in traction taught himself programming - oh and was also a session musician and played on top 10 hits
Your comments are hard to read because they parse ambiguously. It could be "No, they are not real. Polymaths are...", or it could begin "No, they are not real polymaths...". This makes me wonder how Latin could do without punctuation.
They only one close to a real polymath I know started a company when young sold it out for $$ at a young age then decided to get a Phd in music - after a bad accident whist in traction taught himself programming - oh and was also a session musician and played on top 10 hits