Second: He most definitely did have enough evidence to call it law, All observational data supported Kepler's laws of planetary motion within a Copernican system while NONE of the observable data supported the geocentric theory. What Galileo did that became undeniable proof, was observe the phases of Venus, which could ONLY happen in a Heliocentric system.
Third: He quoted Pope Urban directly with the Simplico character. During his trial, this was a big deal.
Trying to spin this as though Galileo was somehow wrong to teach it as truth is preposterous form any scientific standpoint. The evidence was very, very clear and proved that geocentricity must be false and heliocentircity must be true.
The only reason Urban fought the theory was over scripture. The reason Galileo got bitch slapped by the church, though, was the Simplico character using the Pope's favorite arguments against the theory yet being portrayed as a simple minded retard.