You don't need multiple stars to evidence the flaw in FE theory. You only need one, the sun, and the easiest day to demonstrate the problem, the equinox.
FE theory dictates that everyone at an equal distance from the sun would see the sun appear at the same altitude. This is true whether you consider bendy light or not. This means that if you locate the sun above the plane and then draw a circle with the sun as center, everyone at the edge of the circle will view the sun at the same altitude.
Now let's look at the equinox as it is the simplest say to compare what is observed, that zetetic thing, with what should be observed. If we place the sun at 0 lat, 0 lon. 4 observers placed at 0 lat.-45E, 0 lat.-45W, 45N-0 lon., 45S-0 lon. will each observe the sun at an altitude of 45 degrees. However, if you place the sun above the plane at 0,0 and draw a circle that touches 45N and 45S you will notice that the circle does not reach 45E and 45W. On FE, the observers at 45E and 45W should view the sun at an altitude of less than 45 deg.