I agree azimuth is also a problem. It’s very easy to show that. But altitude is definitely a problem. Middle school geometry shows that. Many people don’t appreciate how the sun moves in azimuth but a sunset directly disproves the flat earth model.That's a minor problem. The atmosphere refracts vertically, and you can actually see stuff near the horizon disappear under the right conditions.
The major problem isn't the elevation, it's the azimuth. The sun does not set in the right direction. Like, not at all if you're in Australia, Africa, or South America in the summer (like December), and slightly off almost everywhere else. The light needs to bend sideways for Flat Earth, and it basically never does, because there's no reason for that. FEers can get their followers confused about what we should and shouldn't see vertically, but they stay away from adressing the sideways problem because they know the jig is up once anyone starts questioning that: the only out is to stop believing what you see, and that reeks of brainwashing.
there’s no “bendy” light theory that explains this photo. Why you can see the sun and the horizon at the same point.