As for the whole thing about Socrates/Plato & Historical/Biblical Jesus, I tend to look at it this way....I applies with any famous person who's been morphed into an idealized image....it's the message that counts.
Let's take two real-life famous activist types, Mohandas Gandhi & Mother Teresa. In real life, both actually believed & did some questionable things, even if they did and said some wonderful things. What people may be doing, knowingly or not, is admiring the myth rather than the real person. However, that myth contains a persona and message that humanity needs & could and should strive for.
Same is true for Thomas Jefferson. The real-life Jefferson was likely a hypocritical jerkass slaveowner in the worst way. But the Jefferson of those writings, the Jefferson taught in schools, was one of the most brilliant thinkers & statesmen. A man who taught that everyone is equal & free. The man who emphasized the importance of keeping religion & government separate (thus keeping both pure & sincere and allowing freedom to believe or not believe).
The fact is, when a person shows love for a religious or historical or a celebrity (be they thespians, presenters or musicians), they're really following a shadow. However, the shadow has meaning & that meaning has a purpose & a sort of reality. This is why the saying "Never meet your heroes" is a good thing. Sometimes, the person turns out to not be who you've imagined.
The great wisdom of Gandhi, Mother Teresa, Jesus, Socrates, Thomas Jefferson, etc. is still very much real & valuable, even if certain realities of these figures may be questionable or in doubt.