It really is simple ... God created the stars on day 4 ... and the text says He created them to be used to mark days and seasons (my paraphrase) ...
If we couldn't see the light from those stars (because as you say, they are too far away) ... how could we use them to mark the seasons?
The obvious answer is that He also made the stream of photons from there to here so we could see the star.
My question remains unanswered.