> The problem I have with good faith debate is that it often falls into a fallacy of "fair-time" meaning we think we have to give the other side equal time

The Catholic church could have said exactly the same thing at one point. "Why should we even devote time to an argument as absurd as the earth not being the center of the universe?" There are darker examples along the lines of those you give, with beliefs quite opposite to those we have nowadays.

Galileo’s (or rather the Copernican) model was still wrong though. It had obvious flaws and the church was not wrong in keeping their older model of the universe while a better model (Kepler‘s model) was still in the works.

What Galileo was asking the church to do was extremely unreasonable. He was basically asking them to throw a way a model which had worked fine for hundreds of years just because he observed the phases of Venus and moons of Jupiter. I mean would you? Especially for a model which was worse at predicting the motions of the planets.

Had Galileo’s model been better then Ptolemies’ I could see a case for his arguments, but it wasn’t, and there was no reason for the church to take his arguments at equal value with those in favor of keeping the Ptolemaic model.