But in this case, this isn't just about "what the reader wants" versus "what the author intended." It's about "what the words actually say." The poem tells us that in the moment, the narrator sees that neither road is more or less traveled than the other, and only in the future will the narrator say he took the road less traveled by. We don't need to know anything about Frost or his intentions to see that this is what the poem says.

So you might say that the meaning is not as important as how it makes you feel. But unless you're going to just come out and say that words have no meaning (and what would you say such a thing with?), the meaning of the poetry is somewhat independent of what the reader wants it to be.