Yet. Flat earth is simply debunked by these…
So. There are these simple but relatively accurate star atlases for the night sky. They are based off month and time. They are dial types that show the night sky for a certain time of year.
Northern hemisphere

Southern hemisphere

Or the fact I can see a comet now and then.

Or watch the sun disappear bottom up at sunset.
Or the fact an equatorial telescope mount is useful for amateur astronomy.
Or I can use a telescope to bring into view the moons of Jupiter too faint to see with the unaided eye.
Or when I lived in the coast I had to fight the tide coming in / high tide or fight the tide going out / low tide to simply swim in the ocean.
To using GPS and satellite phones in the middle of the pacific.
FE is useless to me. The heliocentric model is useful and has advanced many technologies. From over the horizon radar to satellite internet. As stash would point out, just the existence of an accelerator in a cellphone.