Intuitively, and instinctively, the answer to me seems yes.
Why?
First, in which language and writing system? Why would a hypothetical creator use that, specifically?
Two, how clearly? Humans have been seing constellations among the stars for thousands of years. Letters isn't that far from it, especially if you need to squint to see it. (e.g. the round part on the R isn't all that round, the dot on the i could just as well be connected with a line to make a lower-case l, etc.)
Three, where? Northern hemisphere, southern hemisphere? Why that one?
There's a lot of questions to ask before just going "ah, my instinct says ..."
Now assuming the most extreme case - the whole thing appears suddenly one night and we have proof it wasn't there the night before, it appears straight over Jerusalem and is written in Hebrew as clear as a dot matrix printer would write it.
From everything we know about the universe it is STILL orders of magnitude more likely that an alien civilization with incredible technology we can't even begin to understand is playing a joke or making an experiment than there to be a creator.
Ockham's Razor: Here is an explanation that requires far fewer assumptions and is compatible with our understanding of the universe.