The light from stars travels billions of light years

I don’t believe such things, but even if it were true - it wouldn’t change what i said or the demonstrable reality of it. No matter how far away the light source is - as you recede from it (or it from you) it will appear to converge with the horizon and eventually no longer be visible.

only to be blocked

You misunderstand, that is your view. You are the one who believes that the light is blocked by the “curve of the earth”.

In my view, the receding light is first apparently converged with the visible horizon (perspective / angular resolution), and ultimately refracted, convexly towards the surface, by the density gradient in our air.

Makes total sense.

It does when you understand it. However, making sense doesn’t make it (or anything) correct. Reality is stranger than fiction because fiction is obliged to possibility.

The light from stars travels billions of light years

I don’t believe such things, but even if it were true - it wouldn’t change what i said or the reality of it. No matter how far away the light source is - as you recede from it (or it from you) it will appear to converge with the horizon and eventually no longer be visible.

only to be blocked

You misunderstand, that is your view. You are the one who believes that the light is blocked by the “curve of the earth”.

In my view, the receding light is first apparently converged with the visible horizon (perspective / angular resolution), and ultimately refracted, convexly towards the surface, by the density gradient in our air.

Makes total sense.

It does when you understand it. However, making sense doesn’t make it (or anything) correct. Reality is stranger than fiction because fiction is obliged to possibility.